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Fullstack Engineer (React / Node.js, AI SaaS)
Financial Assistant
⚲ Kraków
15 000 - 20 000 PLN (B2B)
Wymagania
- Node.js
- React
- Next.js
- PostgreSQL
- Git
- Relational database
- SaaS
- Clean Code
- Open API (nice to have)
- SaaS product management (nice to have)
- Automation (nice to have)
O projekcie: About the Role We are building an AI-powered financial SaaS platform with active users. You will work directly with the founder to improve product stability, implement new features, and help scale the system. This is a high-impact execution role in a small, focused team. We value autonomy, clean code, and pragmatic problem solving. You will have real ownership of features and the opportunity to improve an AI-native system that is already in production. We Offer - Real product with active users (not a prototype) - Direct collaboration with founder - High impact on product decisions - AI-first engineering workflow - Flexible remote setup - Long-term B2B cooperation - Paid technical task as part of recruitment process Wymagania: - 3–5+ years of commercial experience as a fullstack developer - Strong experience with React and Next.js - Experience with Node.js (backend development) - Experience working with relational databases (PostgreSQL preferred) - Experience working on production SaaS applications - Ability to take ownership of features from idea to production - Comfortable debugging real production issues - Ability to understand and improve existing production systems - Strong Git workflow and clean code practices - Fluent English (written and spoken) - Comfortable working in AI-augmented environments (Copilot, Cursor, etc.) Codzienne zadania: - Fix production bugs and improve system reliability - Implement new product features end-to-end (frontend + backend) - Improve and refactor existing codebase - Help standardize templates and workflows - Collaborate directly with founder on product improvements - Write clean, maintainable, well-documented code - Contribute to improving release and development processes
Fullstack Engineer (React & Node.js & Python)
Holisticon Connect
⚲ Wrocław
23 520 - 26 880 PLN (B2B)
Wymagania
- TypeScript
- JavaScript
- React
- Node.js
- Python
- AWS
- Docker
- API
- SQL
- NoSQL
- Linux
- Unix
- Bash script
- CI/CD (nice to have)
- CloudFormation (nice to have)
- Jest (nice to have)
O projekcie: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Fullstack Engineer to join a team that is expanding its genomic data science capabilities to explore data from multiple sources. The goal is to gain insights into the genomic drivers of common diseases and support the identification of novel therapeutic targets. We offer a B2B contract: 140 – 160 PLN net/hour + VAT By joining us, you gain the following: - Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; - Possibility to develop in cloud technologies; - Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; - Respect for your private life so you don't have to work overtime or on weekends; - Team Events budget to socialize outside of work; - Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: - Fully remote work or in our office in Wrocław; - Benefits such as Luxmed, Multisport, and life insurance in Nationale Nederlanden; - Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); - Personal Training Budget with additional paid hours; - Passion Day - an extra day off for your hobby to spend as you please; - Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; - We provide high-quality work equipment + 2 additional monitors and accessories. Submit your application online in one easy step! Apply now! Wymagania: You might be the perfect match if you are/have: ✅Technical skills: - Expertise in TypeScript (JavaScript) - React & Node.js; - Expertise in Python (& FastAPI); - Experience building and deploying secure and scalable apps in AWS (e.g., AWS CDK, ECS, ALB, EC2); - Strong understanding of containerisation (+ deployment) - Docker; - Experience designing and securing APIs; - Experience with LangGraph and/or building agentic AI systems; - Strong knowledge of databases – SQL (PostgreSQL or similar) and NoSQL; - Experience logging, monitoring, and debugging production systems; - Ability to work in Unix/Linux environments and with Bash scripting. ✅Soft skills and others: - Robust software development best practices and documentation; - Proactive and self-driven, able to identify opportunities and suggest tasks rather than waiting for assignments; - Strong team player, comfortable collaborating and contributing in group settings; - Strong communication skills; - Positive mindset and constructive approach to challenges; - Initiative-taker who is not afraid to lead or push ideas forward and deliver in a fast-paced environment; - Eager to learn, grow, and continuously develop new skills; - Fluent English (C1) for effective collaboration in an international environment; - Location in Poland (at least 5 years), enabling smooth cooperation and occasional in-person team meetings; - Availability up to one month. Moreover, we appreciate skills in these areas: - 5+ years of experience in a similar senior role; - Strong product mindset; - Familiarity with CI/CD pipelines; - Familiarity with Domino Data Lab; - AWS CloudFormation, CloudFormation, Lambda; - Nginx; - Other Python frameworks like Flask; - Experience with testing frameworks/tools (e.g. Playwright, Jest); - Interest in Life Sciences and Drug Discovery.
Fullstack Developer (Python + React) – US Time Overlap (12–18 CET)
Holisticon Connect
⚲ Wrocław
23 520 - 26 880 PLN (B2B)
Wymagania
- Python
- React
- Team work
- Product development
- Web applications
- Django
- Flask
- REST API
- Relational database
- Docker
- AWS ECS (nice to have)
- AWS S3 (nice to have)
- TypeScript (nice to have)
- IoT (nice to have)
- Cloud (nice to have)
O projekcie: Senior Fullstack Developer (Python + React) – US Time Overlap (12–18 CET) Holisticon Connect is a division within NEXER GROUP – a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior Full-stack Developer, who will join an international product-driven team working on a cutting-edge platform combining advanced data, scalable systems, and modern web technologies. The product supports complex decision-making processes and operates at a global scale. The team works in a highly collaborative environment with engineers and stakeholders based in the US and Europe. This is not a maintenance project – it’s active product development with real ownership and engineering influence. Because of the distributed setup, daily overlap with US time zones (12:00–18:00 CET) is required. We offer competitive remuneration: - B2B: 140 – 160 PLN net/hour + VAT By joining us, you gain the following: - Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; - Possibility to develop in cloud technologies; - Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; - Respect for your private life so you don't have to work overtime or on weekends; - Team Events budget to socialize outside of work; - Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: - Fully remote work or in our office in Wrocław; - Benefits such as Luxmed, Multisport, and life insurance in Nationale Nederlanden; - Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); - Personal Training Budget with additional paid hours; - Passion Day - an extra day off for your hobby to spend as you please; - Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; - We provide high-quality work equipment + 2 additional monitorsand accessories. If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview. 3) You will meet with a client. Submit your application online in one easy step! Apply now! Wymagania: You might be the perfect match if you are/have: - 5+ years of experience as a Fullstack Developer; - Strong experience with Python (Django or Flask preferred); - Solid frontend experience with React; - Good understanding of REST APIs and web application architecture; - Experience with relational databases (PostgreSQL preferred); - Familiarity with Docker and CI/CD practices; - Very good English (daily communication with international team); - Availability to work with required US overlap (12:00–18:00 CET). Moreover, we appreciate skills in these areas: - Experience with AWS (ECS, ECR, S3 or similar services); - Knowledge of TypeScript; - Experience working in product-oriented teams; - Exposure to data-heavy or performance-sensitive systems. Codzienne zadania: - Designing and developing fullstack web applications (backend + frontend); - Building new features and improving existing functionalities; - Writing clean, scalable, and testable code; - Collaborating closely with Product, Design, and other Engineers; - Participating in code reviews and technical discussions; - Contributing to architecture decisions and continuous improvements; - Working in an Agile/Scrum environment.
Fullstack Developer (Java + Angular)
Scalo
⚲ Kraków
21 840 - 25 200 PLN (B2B)
Wymagania
- Java
- Spring Boot
- Hibernate
- Angular
- SQL
- Docker
- Kubernetes
- JUnit
- REST API
- SOAP
- Azure (nice to have)
- SaaS (nice to have)
- CI/CD (nice to have)
- Jenkins (nice to have)
O projekcie: Cześć! U nas znajdziesz to, czego szukasz - przekonaj się! W Scalo czeka na Ciebie - praca w modelu 100% zdalnym, - stawka do 150 zł/h przy B2B w zależności od doświadczenia. Co dla Ciebie mamy? - Stabilna współpraca Wyzwania technologiczne i praca z nowoczesnymi rozwiązaniami. Internal Mobility - nie musisz zmieniać firmy, żeby zmienić projekt - Ambasadorzy SCALO Rozwijaj kompetencje techniczne i presalesowe, wpływaj na kierunek rozwoju organizacji i wspieraj innych - Budowanie marki osobistej Twórz wartościowe treści, dziel się wiedzą i doświadczeniem, występuj jako ekspert na wydarzeniach (np. ProMeet) - rozwijaj swoją markę w naturalny sposób - Benefit box Pełna opieka medyczna, karta MultiSport i szeroka oferta Motivizera - wybieraj benefity, które dbają o Twoje zdrowie, energię i codzienny komfort - Program poleceń Poleć znajomego z IT, a resztą zajmiemy się my – on dostaje nowy projekt, Ty bonus. Win–win w najczystszej postaci - Integracje i wydarzenia firmowe Wspólne wyjścia, firmowe eventy i okazje do poznania się poza projektami – bo dobre relacje tworzą najlepsze zespoły Brzmi interesująco? Aplikuj – czekamy na Twoje CV! Wymagania: Ta oferta jest dla Ciebie, jeśli: - masz doświadczenie jako Fullstack Developer, - pracujesz z Java 17+, Spring Boot i Hibernate, - znasz Angular (18+), - dobrze czujesz się w pracy z SQL, - masz doświadczenie z Dockerem i Kubernetesem, - piszesz testy w JUnit, - pracujesz z api REST/SOAP, - stosujesz dobre praktyki programistyczne, - potrafisz samodzielnie analizować problemy i debugować, - chcesz rozwijać się również po stronie biznesowego zrozumienia systemu, - jesteś gotowy do współpracy z zespołami i interesariuszami po stronie biznesowej. Mile widziane: - masz dobrą znajomość wzorców architektonicznych i zasad projektowych, - masz doświadczenie z Azure lub innymi systemami chmurowymi, - masz doświadczenie w pracy w modelu SaaS, - potrafisz identyfikować i rozwiązywać problemy wydajnościowe w architekturze mikroserwisowej, - znasz CI/CD (Jenkins), - masz doświadczenie w pracy z dużymi wolumenami danych. Codzienne zadania: - rozwój i utrzymanie aplikacji fullstackowych (backend + frontend), - praca z Java 17+ i Spring Boot po stronie backendu, - rozwój interfejsów użytkownika w Angularze (18+), - praca z Hibernate oraz relacyjnymi bazami danych (SQL), - tworzenie i utrzymanie testów jednostkowych (JUnit), - praca w środowisku kontenerowym (Docker, Kubernetes), - projektowanie rozwiązań zgodnie z dobrymi praktykami (clean, testable, modular code),
Full Stack Developer
HedgeServ
⚲ Sofia
Wymagania
- TypeScript
- Angular
- NestJS
- JavaScript
- AWS
At HedgeServ, we’re redefining what’s possible in fund administration. With more than $700 billion in assets under administration, we partner with the world’s most forward-thinking investment managers – across private equity, private credit, endowments, hedge funds and more – to deliver seamless, tech-enabled solutions that drive performance. Our proprietary platform, enhanced by machine learning and robotic process automation, gives clients real-time insights and unmatched control over their operations. Alongside our technology, we offer award-winning service through our team-based approach -- led by a deeply experienced team of industry experts. Our solutions span the full investment lifecycle, including fund accounting, middle office, risk, compliance, tax, and investor services. We’re a future-focused company, empowering our people through a robust career development framework, clear career trajectories with structured learning paths, training, and progression plans. We invest in leadership development and in our collaborative culture, creating space for talent to grow. Our corporate values – Relationships, Support, Innovation, and Expertise – create a sense of shared purpose and belonging, and we recognize our employees sit at the core of our success. We continue to innovate and evolve through our employees, working together to achieve our shared vision and mission. HedgeServ supports employees through a variety of offerings, including remote and hybrid working arrangements, and fully paid comprehensive health and well-being benefits. We’ve been recognized as an employer of choice, earning a top 100 workplaces designation. Founded in 2008, HedgeServ has grown into a global organization with over 2,000 experts across the globe, with offices in the United States, Grand Cayman, Ireland, Poland, Bulgaria, Luxembourg, the Philippines, and Australia. We’ve earned numerous accolades, including Top Overall Administrator, along with #1 rankings for providing alternative asset services in Accounting, Technology, Client Service, Investor Services, Alternative Fund Expertise, Reporting, and Regulatory Expertise. The Full-Stack Developer is responsible for the creation and maintenance of applications used by both internal and external users. This includes partnering with other developers, QAs, application support engineers, and infrastructure engineers to ensure a smooth development and operational pipeline and communicating with business and product owners to refine requirements. Our tech stack includes Angular/ NestJS/ JavaScript/ TypeScript/ AWS/ Kubernetes/ MongoDB/ ElasticSearch. Key Responsibilities - Work on a distributed team to create and maintain applications written in TypeScript. - Write high-quality code with comprehensive, well-written tests. - Develop both frontend and backend features. - Collaborate across teams to develop APIs and integrate services. - Understand the business requirements and turn them into software features. - Troubleshoot and resolve issues in the existing software applications. - Conduct code reviews to ensure the delivery of quality software.
Aladdin Full-Stack Developer
Link Group
⚲ Remote
20 160 - 23 520 PLN (B2B)
Wymagania
- Aladdin
- Aladdin API
- Aladdin data structures
- Analytical skills
O projekcie: We are looking for an experienced Full-Stack Developer with hands-on expertise in the Aladdin platform to support system integrations and application development initiatives. Wymagania: - Practical exposure to and implementation experience with Aladdin APIs - Solid understanding of Aladdin data structures and prior involvement in Aladdin deployments - Experience refactoring or migrating trading and investment applications to new platforms - Strong analytical skills with the ability to perform technical mapping and system reconfigurat Codzienne zadania: - Design, develop, and maintain full-stack solutions integrated with the Aladdin platform - Work extensively with Aladdin APIs for data extraction, processing, and system connectivity - Leverage strong understanding of Aladdin’s data model and architecture gained through prior implementation projects - Support both commercial off-the-shelf and internally developed applications - Perform data mapping, gap analysis, and system alignment activities - Re-engineer and migrate existing JHI applications to Aladdin, including transformation of CRD trading APIs and Python-based workflows - Ensure smooth integration between legacy systems and the Aladdin ecosystem
Senior Fullstack Engineer (.NET & React)
Auctane Poland Sp. z o.o.
⚲ Wrocław
15 500 - 21 000 PLN (PERMANENT)
Wymagania
- React
- .NET
- TypeScript
- Testing
- DevOps
- AWS (nice to have)
- Cloud (nice to have)
- CI/CD Pipelines (nice to have)
O projekcie: About the role As a Senior Fullstack Developer, you will play a key role in the design, development, and maintenance of our web applications using ReactJS and .NET. You will be responsible for driving technical decisions, mentoring team members, and ensuring the architectural integrity of our solutions. This role requires deep technical expertise, strong problem-solving skills, and the ability to work across teams to deliver high-impact solutions. This role is ideal for someone who thrives in a fast-paced environment, enjoys mentoring others, and takes initiative in driving technical excellence. Salary range for this role: 15,500- 21,000 PLN gross/ month What will make you stand out? - Bachelor's degree in Computer Science or a related field. - Experience with AWS services and cloud architecture. - Knowledge of modern build tools and deployment strategies. - Familiarity with DevOps practices and CI/CD pipelines. What do we offer? - 🗓️ Annual Salary Review: We are reviewing the salaries of all our teams annually in order to evaluate an increase according to individual performance and the business results. - 99% discount on your personal shipment orders via Packlink.pro - Up to 500PLN/year to match your NGO donations! We are happy to support your initiatives by duplicating the amount donated. - Volunteer day. You can take 1 day off per year in order to participate in volunteering activities! We will love to see some pictures in our slack! - Referral Fee 🔗 We need your support in hiring top-class talent! We offer a referral bonus of 4-20k, depending on the complexity of the role and the hiring process. - ⚕️We have an Employee Assistance Program with psychological assistance free of charge. - ⚖️ Great work-life balance We offer a flexible work schedule and will do our best to adapt to your personal situation. Working in a fast-paced environment can be intense, but that doesn’t mean you shouldn’t enjoy your free time! - An inclusive and upbeat work environment Leave your suit behind... we’re a t-shirt and converse kind of place! More importantly, our company culture promotes diversity and inclusion. The personality and opinions of each of our team members are important and valid, and we aim to offer all employees a safe environment where they can be themselves and thrive. - A cross-cultural atmosphere We are a truly international team of 20 nationalities that speak 10 languages. Our company language is English and all internal communication and company-wide meetings are in English. - 🏟️ Company events Work hard, play hard! We do our best every day, even at our regular team-building events. - Internal and external training, free access to online training platforms such as Linkedin Learning - Possibility to work in a home-office using equipment provided by AUCTANE, or in our office prepared in accordance with all safety requirements. - Personal Training Budget. Up to 3.500 PLN/year training budget (certifications, conferences attendance, etc.) to invest in your professional development. We want to help you improve your technical skills, feel involved in the product community, and develop your soft skills to lead teams and manage other stakeholders. - Up to 30 days of vacation per year (additional days are granted along with seniority at AUCTANE). - 🗺️ Languages classes every week. Thirsty for knowledge? Learn a new language by joining our free English/Spanish/German classes. You can connect and enjoy taking up a new language or improving your current skills with one of our great instructors. - Free private medical insurance. - Attractive life insurance. - Co-financing for sports and recreational activities - Gym membership co-financing Wymagania: What are we looking for? - 5+ years of experience in web application development with React and .NET (in total). - Deep understanding of JavaScript (ES6+), TypeScript, and modern front-end frameworks. - Strong expertise in designing and integrating RESTful APIs. - Proven experience in architectural decision-making and system design. - Experience with source control systems and branching strategies (e.g., Git). - Proficiency in testing frameworks such as Jest, React Testing Library, or Playwright. - Strong ability to communicate complex technical concepts to both technical and non-technical stakeholders. - Self-driven with a proactive approach to problem-solving. Codzienne zadania: - Design, develop, and maintain scalable web applications using React and .NET. - Lead technical discussions and contribute to architectural decisions. - Optimize web applications for performance, scalability, and security. - Mentor and support junior developers, fostering a culture of learning and growth. - Collaborate with cross-functional teams, including Product, UX/UI, and DevOps, to drive innovation and best practices. - Conduct and oversee code reviews, ensuring adherence to best practices and high-quality standards. - Troubleshoot and resolve complex issues across the full stack. - Stay updated with industry trends and proactively introduce improvements.
Senior Full Stack Engineer
HSBC Technology Poland
⚲ Kraków
20 000 - 24 000 PLN (PERMANENT)
Wymagania
- Testing
- DevOps
- Automated testing
- TDD
- BDD
- Microservices architecture
- REST API
- Cloud
- Security (nice to have)
- C# (nice to have)
- .NET (nice to have)
- MSSQL (nice to have)
- Angular (nice to have)
- User experience design (nice to have)
O projekcie: Your career opportunity At HSBC, we are investing heavily across our Technology and Digital domains. Our global technology teams work closely with HSBC’s global businesses to help design and build digital services that allow our millions of customers around the world, to bank quickly, simply, and securely. IAM Technology is a global engineering and development team providing Identity and Access Management technology for HSBC. We provide and support many of the Bank’s most critical IAM infrastructure services including Active Directory, Privileged Access Management (PAM) and Access Governance. We are passionate about providing high-quality, automated, and self-service solutions to our customers. Specialist Engineers within PAM Technology within one of three key functions - SRE, Engineering or Development, working in an Agile pod within a globally diverse team. There are opportunities to specialise in one area or rotate to build a broad range of technical skills in this diverse and exciting field. This role reports into the PAM Development Function. The role holder will act as a Full Stack Engineer within the PAM Technology Development team and have opportunity to work on multiple products and technologies. The initial assignement will be working in the High Risk Event Monitoring pod to contribute to our Privileged Access monitoring solution enhancments. This is a flexible and fluid engineering function with wide ranging SME engineers able to fulfil all PAM third party tooling and in-house solution requirements. What we offer - Competitive salary - Annual performance-based bonus - Additional bonuses for recognition awards - Multisport card - Private medical care - Life insurance - One-time reimbursement of home office set-up (up to 800 PLN). - Corporate parties & events - CSR initiatives - Nursery and kindergarten discounts - Financial support with trainings and education - Social fund - Flexible working hours - Free parking Wymagania: What you need to have to succeed in this role - Minimum 5 years of experience working in a development pod preferably within Cyber Security department - Experience in C# .NET Framework and MSSQL server - Experience in Angular Framework and consideration for user experience design - Experience in delivering a change from requirment, though design, coding, testing and deployment stages - Flexible, adaptable and able to manage multiple tasks in a dynamic, fast-paced environment. Ability to prioritise effectively and deliver to deadlines. - Practical experience with Scrum and DevOps principles - Practical experience with automated testing, TDD, BDD - Knowledge of Microservices architecture, Rest API concept, Cloud technology Codzienne zadania: - Analyze and propose solutions based on business requirements for a broad set of in-house built services in the Privileged Access Management space - Contribute deep technical skills in development, release automation and solution design to enhance our services - Produce accurate, clear, commented and efficient program code from a wide range of program specifications, - Amend and produce External and Internal specifications and standard documentation as required at each stage of project lifecycle, including database and application design, - Research, develop, and implement new solutions aligned to stakeholder requirements and product roadmaps. - Review test data output for program and system modification accuracy and own bug resolution - Complete projects in a timely manner utilising Agile methodology for task tracking. - Foster strong relationships with business stakeholders and internal technical teams with focus on transparency and collaboration
Junior React Fullstack Developer
ITISIT sp z o.o.
⚲ Kraków
5 880 - 8 400 PLN (ZLECENIE)
Wymagania
- React
- Node.js
- TypeScript
- Git
- SQL
- JavaScript
- next.JS
- .NET (nice to have)
- Amazon Web Services (nice to have)
O projekcie: Jesteśmy zespołem kreatywnych, energicznych programistów, dla których programowanie jest przede wszystkim pasją. Specjalizujemy się w różnych technologiach, nieustannie rozwijając i doskonaląc nasze umiejętności oraz służąc sobie wzajemną wymianą doświadczeń. Mamy mały zespół i płaską strukturę. Mamy kilka długofalowych projektów zarówno wewnętrznych jak i rozwijanych dla naszych klientów głównie z branży medycznej. Szukamy ambitnych osób, które nie boją się wyzwań i lubią się uczyć. W tym ogłoszeniu szukamy ekspertów na cały lub dowolną część etatu. Zainteresowanych bardzo proszę o kontakt mailowy ze wskazaniem dostępności czasowej (części etatu). Proces rekrutacji: - rozwiązanie zadania testowego (termin do 7 dni, potrzebny czas 1-4h) - rozmowa techniczna i o aspektach miekkich (30-60 min) - decyzja Wymagania: 1. Minimum 1 rok doświadczenia 2. JavaScript (ES6+), TypeScript, Next.JS: - Doświadczenie w programowaniu w języku JavaScript, ze szczególnym uwzględnieniem standardu ES6 i powyżej. - Umiejętność pracy z TypeScript, co obejmuje deklaracje typów, interfejsy i inne aspekty programowania typowanego. - Znajomość frameworka Next.JS, w tym jego zalety, takie jak rendering po stronie serwera (SSR) oraz statyczne generowanie stron (SSG). 3. React lub React Native: - Znajomość biblioteki React do budowy interfejsów użytkownika w aplikacjach webowych. - Doświadczenie w używaniu React Native do tworzenia aplikacji mobilnych, dzięki wspólnemu kodowi dla platform Android i iOS. - JavaScript (ES6+), TypeScript, Next.JS 4. .Net Core - Doświadczenie w programowaniu w języku C#, ze szczególnym uwzględnieniem .Net Core i nowsze (antualnie piszemy w 5,6) - Umiejętność tworzenie API (WebAPI) zgodnych z zasadami RESTful 5. Clean code Codzienne zadania: - Projektowanie, rozwój i utrzymanie oprogramowania (systemy medyczne) - Rozwój mikroserwisów w .NET Core - Programowanie po stronie Frontu - Nadzorowanie działania aplikacji, debugowanie błędów i rozwiązywanie problemów - Planowanie - Code review
Fullstack (Node.js/ React)
Idego Group Sp. z o.o.
⚲ Gdynia, Warszawa, Poznań, Kraków, Wrocław
23 520 - 28 560 PLN (B2B)
Wymagania
- TypeScript
- Node.js
- React
- GCP
- Firebase
- SQL
- NoSQL
- React Router (nice to have)
- DevOps (nice to have)
O projekcie: Join a team that's building the core digital infrastructure for a leading German health-tech platform. Our client pioneered the country's first digital sick note and has since become a trusted provider of digital care services. We are looking for someone who follows a test-driven approach, can refactor code in a structured and low-risk manner, and exercises good judgment in choosing when to apply design patterns-and when to avoid them. We're looking for someone to join ASAP! :) Our perks - work environment with zero micromanagement - we cherish autonomy - 100% remote work, recruitment & onboarding - experienced team from 4 to 15+ years in commercial projects - unique memes& pets channel - private medical insurance and sports card - we want you to join our team. We are neither the agency giving you projects from time to time, nor huge corporation where you are a "dev XYZ". At Idego - you matter! Wymagania: - 6+ years of experience in backend development - Be proficient with TypeScript, Node.js - Proficiency in React; experience with React Router is a plus - Knowledge of cloud services, preferably Google Cloud Platform (GCP) and Firebase - Experience working with both SQL and NoSQL databases - Basic DevOps skills (e.g., simple pipelines, deployments, environment configuration) - Ability to make independent technical decisions - Strong UI development skills with attention to detail and high-quality user interfaces - Ability to work effectively in a dynamic and autonomous environment Codzienne zadania: - Build service-oriented features, including prescriptions and profile access, while focusing on a clean, functional UI where clarity is key - Contribute to both the backend and frontend, with a strong focus on backend logic, data modeling, and system behavior - Work hand-in-hand to maintain a unified codebase and architecture - Write clean, testable code that's easy to understand and maintain across our products
Full stack engineer (Java/Python + React)
Antal
⚲ Kraków, Warszawa
30 240 - 33 600 PLN (B2B)
Wymagania
- Java
- Python
- Web API
- React
- SQL Server
- T-SQL
- SDLC
O projekcie: 🚀 Senior Fullstack Developer (Java / Python + React) 📍 Lokalizacja: [zdalnie / hybrydowo / Kraków] 🕒 Forma współpracy: [B2B] 💰 Widełki: [180 -200 zł/h] 👋 O roli Szukamy doświadczonego Senior Fullstack Developera, który chce mieć realny wpływ na architekturę systemu, jakość rozwiązań i kierunek rozwoju aplikacji produkcyjnych. To rola dla osoby, która nie tylko koduje, ale: - projektuje, - usprawnia, - proponuje lepsze rozwiązania, - dba o jakość i stabilność systemów. Wymagania: - Minimum 5 lat doświadczenia w komercyjnym developmentcie - Bardzo dobra znajomość Java lub Python - Doświadczenie z budową i utrzymaniem Web API - Znajomość React - Bardzo dobra znajomość SQL (SQL Server, T-SQL, optymalizacja zapytań) - Doświadczenie w CI/CD - Znajomość pełnego SDLC - Umiejętność pracy w środowisku produkcyjnym pod presją czasu - Silne zdolności analityczne i rozwiązywania problemów ⭐ Mile widziane - Doświadczenie w projektowaniu architektury systemów - Znajomość wzorców projektowych - Doświadczenie w automatyzacji procesów - Doświadczenie w pracy bezpośrednio z klientem Codzienne zadania: - Udział w projektowaniu architektury systemu - Rozwijanie i optymalizacja aplikacji w ekosystemie Java lub Python - Implementacja rozwiązań zgodnie z najlepszymi praktykami i Design Patterns - Wprowadzanie zmian w warstwie UI (React) w celu poprawy UX i stabilności - Projektowanie i optymalizacja baz danych (SQL Server, T-SQL) - Tworzenie dokumentacji technicznej - Praca nad prototypami i walidacja koncepcji - Udział w całym cyklu życia oprogramowania (SDLC) - Wsparcie DevOps (CI/CD) - Zarządzanie zmianą w ramach Service Management lifecycle - Współpraca z klientami i szybkie rozwiązywanie problemów produkcyjnych
Full Stack Developer (m/f/d)
B2X CARE SOLUTIONS Sp. z o.o.
⚲ Warszawa
17 000 - 22 000 zł gross
Wymagania
- TypeScript
- Node.js
- Java
- Python
- PostgreSQL
- C#
- AWS
- MySQL
- GitLab
- API design
- CI/CD
- Technical Skills
- Domain Knowledge
- Language Skills
- Soft Skills
- Location:
- • This a full Home office-based position
O firmie: - B2X is a leading provider of post sales services specializing in circular lifecycle management for electronic hardware. Established in 2007 and head-quartered in Munich, our solutions and services spanning the whole lifetime of a wide range of consumer electronic products as well as B2B electronic infrastructure. - Our digital platform services and (web) portal solutions facilitate the digitalization and automation of multiple workflows and interactions with end-users and partners in our clients' network. - We empower companies with innovative carbon solutions to manage their hardware lifecycles towards carbon net zero. - Together with top-tier tech companies across multiple industry sectors and geographies, we create unique customer experiences at reduced complexity and cost for lifecycle management. - The kind of unique B2X operating model integrates more than 200 service partners in over 30 countries, orchestrated by our B2X team of more than 100 service professionals and steered by the proprietary B2X service management platform. Zakres obowiązków: - . Billing & Invoice Data Processing - • Design and implement backend services for invoice data extraction, validation, calculation, and transformation based on contractual rules, SLAs, pricing matrices and repair service conditions. - • Develop logic to consolidate data from logistics events, repair operations, partner services and external financial inputs. - • Ensure accurate settlement and reconciliation between partners (e.g., repair centers, logistics providers) and customers. - • Maintain audit trails and financial data integrity across the entire billing workflow. - 2. Approval & Workflow Automation - • Build configurable approval workflows for internal and external stakeholders (e.g., finance controllers, partner managers, customer approvers). - • Implement rule engines for exception handling, dispute management and manual overrides. - • Provide UI features for reviewing, commenting, and approving billing items and invoice lines. - 3. System Architecture & Full Stack Development - • Develop scalable solutions that support onboarding of new customers and business areas. - • Design, develop and maintain robust backend APIs (REST) and microservices supporting billing and invoicing features. - • Create and modernize intuitive front-end interfaces for financial reporting, approval monitoring, dispute resolution, and invoice line-item inspection. - • Ensure seamless integration with operational systems, logistics platforms and finance systems. - • Contribute to database schema design focusing on financial accuracy, performance and auditability. - 4. Data Quality, Compliance & Security - • Implement and maintain validation frameworks ensuring high data accuracy across billing sources. - • Ensure compliance with financial regulations, tax rules, customer/partner contracts and data protection requirements. - • Build monitoring and alerting systems to detect anomalies in pricing, invoice volumes or approval delays. - 5. Collaboration & Stakeholder Management - • Work closely with Finance, Operations, Partner Management and Data Engineering teams to improve billing performance and accuracy. - • Translate business requirements into technical specifications, workflows and architecture components. - • Support internal and external audits through transparent documentation and traceable system behaviour. Oferujemy: - A versatile area of responsibility with which you are at the pulse of the company with the opportunity to influence crucial decisions - A flexible inclusive working environment - A multi-cultural operating company - An open-minded, positive and motivated environment with flat hierarchies and short decision paths - The ability to work independently and responsibly and contribute your talents - Colleagues which are more than happy to welcome you
Senior full stack fejlesztő
Senso-Media Zrt.
⚲ Budapest
13 066 - 21 778 PLN (PERMANENT)
Wymagania
- Node.js
- Vue.js
- MongoDB
- REST API
- Git
- JavaScript
- TypeScript (nice to have)
- Electron (nice to have)
- Linux (nice to have)
- MySQL (nice to have)
Wymagania: - Legalább 3 év tapasztalat JavaScript-fejlesztésben (Node.js + Vue.js) - MongoDB és REST API-k magabiztos ismerete - GIT alapú verziókezelésben való jártasság - Önálló munkavégzés komplex feladatokban, rendszerszintű gondolkodás - Jó kommunikációs készség – nem csak kódolsz, hanem érted is az üzleti célokat - Tapasztalat csapatmunkában, code review-kban, agilis környezetben - Tesztelési gyakorlat (unit vagy integrációs szinten) Codzienne zadania: - Webes alkalmazások tervezése és fejlesztése modern JavaScript/Node.js alapon – teljes stackben gondolkodunk, a backendtől a frontendig - Vue.js alapú felhasználói felületek építése, reszponzív, felhasználóbarát megoldásokkal - REST API-k tervezése, fejlesztése és integrálása – más rendszerekkel való hatékony kommunikáció kialakítása - MongoDB-alapú adatmodellek kezelése és optimalizálása – hatékony adatkezelés és lekérdezés a backend oldalon - Kód verziókezelése GIT-tel, részvétel code review-kban, merge requestek írása, dokumentálása - Fejlesztői tesztek írása és futtatása - Fejlesztési problémák feltérképezése, hibák azonosítása és javítása - Javaslattétel technológiai és fejlesztési kérdésekben
Senior Kotlin Engineer (Agentic AI)
N-iX
⚲ Kraków, Wrocław, Warsaw
17 034 - 22 589 PLN (B2B)
Wymagania
- Kotlin
- Spring Framework
- React
- Protocols
- REST API
- GraphQL
- gRPC
- Maven
- NoSQL
- Python (nice to have)
- GenAi (nice to have)
- AI (nice to have)
- Machine Learning (nice to have)
- Natural language processing (nice to have)
- Docker (nice to have)
- Kubernetes (nice to have)
- MSc (nice to have)
O projekcie: We are looking for talented Senior Software Engineer to join our AI project in Europe. The ideal person will have hands-on experience with multiple backend frameworks, databases, and tools, enabling them to adapt to different project requirements and contribute to the development of robust applications. We use Kotlin, Spring Boot and reactive programming to build a core AI agent framework/platform enabling internal teams to easily develop, deploy, and scale their own AI agents within a shared infrastructure. Our California-based customer is an American global e-commerce leader, one of the most popular and successful websites on the Internet. It provides platform services by connecting millions of sellers and buyers in more than 190 markets around the world. Wymagania: - At least 5 years of proficiency in Kotlin - Deep experience with the Spring Framework - Reactive tools experience (Project Reactor) - Experience setting up Virtual Machines - Knowledge of different communication protocols such as REST, GraphQL, gRPC - Experience with distributed systems - Experience with YAML-based configuration (applications, infrastructure, CI/CD) - Familiarity with tracing, metrics and monitoring best practices - Experience of creating frameworks and platform for other developers - Proficiency in Maven or similar tools - Familiarity with NoSQL databases - Very good spoken and written knowledge of English language (C1) Nice to have: - Python experience is nice to have - Familiarity with GenAI, AI agents, machine learning, and natural language processing concepts is a plus - Experience with MCP, A2A, RAG is a big plus - Experience with event-driven architecture - Experience with Docker and Kubernetes - BSc or MSc in Computer Science, Engineering or relevant field Codzienne zadania: - Design and develop a robust and extensible Kotlin framework and platform for configuring and managing AI agents - Write clean, maintainable, and efficient code that complies with our coding standards - Ensure the performance, quality, and responsiveness of the framework/platform - Identify and correct bottlenecks and errors - Help to maintain code quality, organization, and automatization. - Create and maintain technical documentation for the framework/platform
Senior Fullstack Engineer (.NET + Vue.js)
Spyrosoft
⚲ Wrocław, Łódź, Warszawa, Kraków, Białystok, Gdańsk
20 160 - 20 160 PLN (B2B)
Wymagania
- .NET
- Vue2/Vue3
- HTML5/CSS
- NHibernate
- REST APIs
- MSSQL
- PostgreSQL
- Docker
- Azure
O projekcie: We are looking for a Senior Fullstack Developer to design and develop new features and modules for our ERP system. Form of cooperation: freelance project-specific B2B contract with an estimated duration through the end of 2026, offering the potential for extension based on project needs and performance. Tech stack: C#, .NET, Vue2/Vue3, HTML5/CSS, nHibernate, REST APIs, MSSQL, PostgreSQL, Docker, Azure. Wymagania: - Bachelor’s or master’s degree in computer science, Software Engineering, or a related field - Proven experience as a Software Engineer with a significant focus on backend development - Good experience with C#, .NET and Vue2/Vue3 - Good knowledge on HTML5 / CSS, nHibernate and REST APIs - Cloud experience on Azure (cloud functions, messaging, storage) Docker / containers - Expertise in SQL, including database design, query optimization, performance tuning, and working with relational database management systems (e.g., MSSQL and PostgreSQL) - Familiarity with agile development methodologies and working in a scrum team - Strong proficiency in Microsoft Azure services, including but not limited to: Azure Compute services and Azure Data services. Integration services (e.g., Azure Logic Apps, Azure Service Bus) - Knowledge of Azure AI - Solid understanding of software development principles, design patterns, and best practices - Experience with version control systems (e.g., Git) - Excellent problem-solving and analytical skills - Strong communication and collaboration skills, with the ability to effectively communicate technical concepts to both technical and non-technical stakeholders - Fluency in English, both written and spoken Codzienne zadania: - Design, develop, and deploy robust and scalable applications and services on Microsoft Azure - Collaborate with product owners, designers, and other engineers to understand requirements and translate them into technical solutions - Participate in architectural discussions and contribute to the evolution of our system design on Azure - Ensure the performance, reliability, and security of our applications and infrastructure - Troubleshoot and resolve complex technical issues - Write clean, well-documented, and testable code - Contribute to and utilize Azure DevOps for CI/CD pipelines and infrastructure as code - Stay up to date with the latest trends and technologies in Azure and related areas
Senior Fullstack Developer with Java
Reply Polska
⚲ Katowice
16 800 - 29 400 PLN (B2B)
Wymagania
- Java
- Spring
- Spring Boot
- Hibernate
- Angular
- TypeScript
- RxJS
- Kubernetes
- GitLab
- JUnit
- Mockito
- Jest
- Jasmine
- Cypress
O projekcie: About Fincon Reply Fincon Reply is a business and IT consultancy specializing in the financial services industry. Fincon Reply proactively advises banks, the Sparkassen Finance Group, insurance companies and near-financial companies as well as their suppliers on their digital transformation. The company provides on-site support with specialised teams of consultants and developers and delivers turnkey solutions. Benefits - Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. - Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! - Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. - Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Wymagania: - Successful completion of higher education as a qualified IT specialist or university degree in computer science. - At least 6 years of experience working as a Backend or Fullstack developer. - Experience in code testing. - Experience working in an agile environment. - Experience working in a self-organized team. - Good familiarity with Jira and Confluence. - Very good communication skills in English and Polish. - Communication skills in German is a plus. Codzienne zadania: - You are a member of a team for dedicated customer in the German financial industry. - You work with a technology stack: - Backend: Java 21, Spring 6, Spring Boot 3, Hibernate, - Frontend: Angular 19. Typescript, Web Components, RxJs, - and Kubernetes, Gitlab, Sonar, Junit, Mockito, RESTAssured, Jest, Jasmine, Cypress. - You are responsible for the product you build. - You proactively bring in ideas to create innovative solutions. - You work in an agile environment, using scrum. - You meet with your team in the office (Katowice) at least once a month to plan your work and discuss progress. - You take responsibility in a self-organized team.
Senior Fullstack Developer (Java, Angular)
Link Group
⚲ Remote
20 000 - 24 000 PLN (B2B)
Wymagania
- Degree
- Testing
- Quality assurance
- Java
- Jira (nice to have)
- Confluence (nice to have)
O projekcie: You will become part of a development team delivering solutions for a dedicated client from the financial sector. The position involves working with modern technologies in a cloud-native environment and contributing to the full lifecycle of the product - from development to continuous improvement. Required availability: from April Wymagania: - Degree in Computer Science or a related IT field (or equivalent professional qualification) - Minimum 6 years of professional experience as a Backend or Fullstack Developer - Practical experience with automated testing and quality assurance practices - Previous work experience in Agile delivery environments - Comfortable working within autonomous, self-managed teams - Familiarity with collaboration and project tools such as Jira and Confluence - Strong communication skills in English and Polish - German language skills are considered an additional advantage Codzienne zadania: - Develop and maintain applications using a modern technology stack, including Java 21, Spring Framework (Spring 6, Spring Boot 3, Hibernate) on the backend and Angular 19, TypeScript, Web Components, and RxJS on the frontend Work within a cloud-native ecosystem supported by tools such as Kubernetes, GitLab, and automated testing frameworks - Take ownership of the solutions you deliver, ensuring quality, stability, and continuous enhancement of the product - Actively contribute ideas and propose innovative technical improvements - Collaborate in an Agile Scrum environment with a self-organizing development team - Participate in regular in-person team meetings in Katowice (at least once per month) to plan work and review progress
Senior Backend Engineer (Java/Kotlin, PostgreSQL)
Antal
⚲ Kraków
30 240 - 36 960 PLN (B2B)
Wymagania
- Unix
- HTTP
- API
- REST API
- Java
- Kotlin
- SQL
- Git
- JavaScript (nice to have)
- React (nice to have)
O projekcie: Ze względu na aktualne potrzeby projektowe klienta poszukujemy doświadczonego Fullstack Developera z wyraźnym nastawieniem na backend (Java/Kotlin, PostgreSQL) lub Backend Developera z gotowością do rozwijania kompetencji w obszarze frontendu. Lokalizacja: Kraków Tryb pracy: hybrydowy, 2 x w tyg. praca w biurze Forma zatrudnienia: contract, B2B Oferujemy / Benefity: - Prywatną opiekę medyczną - Kartę Multisport lub dostęp do systemu MyBenefit - Ubezpieczenie na życie Wymagania: - Otwartość na naukę i pracę z wieloma językami programowania - Praktyczna znajomość systemów Unix - Zrozumienie baz danych z perspektywy użytkownika/klienta - Wiedza z zakresu komunikacji poprzez HTTP API, w szczególności REST - Must have: - Bardzo dobra znajomość Java, Kotlin - Doświadczenie w pracy z bazami danych i SQL - Praktyczna znajomość systemu kontroli wersji Git Nice to have / Optional: - Znajomość JavaScript lub React Codzienne zadania: - Praca w zespole liczącym od 4 do 6 osób, z przypisanym Product Ownerem (zespoły zazwyczaj działają w jednej lokalizacji, choć mogą być rozproszone geograficznie) - Analiza wymagań biznesowych, dzielenie ich na mniejsze zadania (stories) oraz ich iteracyjne wdrażanie na produkcję - Aktywne uczestnictwo w utrzymaniu i wsparciu aplikacji – obowiązuje zasada: „zespół, który tworzy, odpowiada również za wsparcie” - Identyfikowanie obszarów długu technologicznego oraz dbanie o właściwą równowagę pomiędzy jego redukcją a rozwojem nowych funkcjonalności - Projektowanie rozwiązań dla nowych funkcji zgodnie z obowiązującymi standardami technologicznymi i ograniczeniami - Ścisła współpraca z innymi członkami zespołu, w tym programowanie w parach (pair programming)
Mid Full-Stack Engineer (AI)
ArdentCode
⚲ Wrocław, Warszawa
16 000 - 20 000 PLN (B2B)
Wymagania
- React
- Node.js
- JavaScript
- AI
- TypeScript (nice to have)
- Django (nice to have)
- Python (nice to have)
O projekcie: 💡 O nas Jesteśmy firmą technologiczną, która od 25 lat współpracuje z partnerami z Europy i Stanów Zjednoczonych, tworząc zespoły i wspólnie budując zaawansowane aplikacje webowe. Specjalizujemy się w technologiach JavaScript / TypeScript / React / Angular / Node.js, a nasze doświadczenie obejmuje również Java, .NET oraz Python. Wspieramy klientów w analizie systemów, projektowaniu architektury, struktur danych oraz we wdrażaniu nowoczesnych metodyk projektowych (SAFe). Nasze rozwiązania mają realny wpływ na życie milionów użytkowników na całym świecie. 🔎 Kogo szukamy Szukamy Mid Software Engineera z minimum 4 latami komercyjnego doświadczenia, który dołączy do projektu z branży Music Publishing (global royalty collection). To rola dla osoby, która lubi modernizować dojrzałe systemy, myśli produktowo i potrafi dowozić w środowisku integrującym „nowe” ze „starym”. 🎵 Projekt Rozwój nowej wersji aplikacji wykorzystywanej w obszarze global royalty collection (music publishing). Obecna aplikacja działa ponad 10 lat – teraz celem jest: - modernizacja i rozwój nowej wersji systemu, - optymalizacja procesów developerskich oraz przygotowanie ich pod wykorzystanie AI. W tle funkcjonuje istniejący back-end, a nowa część będzie budowana jako nowoczesna aplikacja webowa. 👉 Oferujemy: - dużo samodzielności i odpowiedzialności, - współpracę z doświadczonym zespołem (międzynarodowym), który stawia na jakość i partnerskie podejście. - możliwość rozwoju kompetencji w ramach projektu oraz indywidualnie, - możliwość pracy zdalnie, hybrydowo lub w jednym z naszych biur (Wrocław/Warszawa), - atrakcyjne wynagrodzenie oraz współpracę w modelu B2B. 🤝 Dlaczego warto z nami pracować? W ArdentCode polegamy na sobie. Jesteśmy dociekliwi. Chętnie dzielimy się wiedzą. Wierzymy, że tylko w ścisłej współpracy możemy tworzyć naprawdę wielkie rzeczy. Wypracowaliśmy kulturę organizacyjną i środowisko tworzące przestrzeń do ciągłego rozwoju naszego Zespołu i przestrzeń do osiągania osobistych celów. Dbamy aby dostarczać Ci projekty, dzięki którym zrealizujesz własną ścieżkę rozwoju kompetencji. Wymagania: Tak wyobrażamy sobie profil osoby na tę pozycję: - Minimum 4 lata doświadczenia komercyjnego w wytwarzaniu aplikacji. - Bardzo dobra znajomość tworzenia aplikacji webowych (front-end), w tym pracy z API i integracjami. - Praktyczne doświadczenie z nowoczesnym ekosystemem JS/TS (szczególnie React; Node.js jako duży plus). - Umiejętność pracy z istniejącymi systemami (legacy) i budowania rozwiązań „obok”, które muszą działać stabilnie od pierwszego dnia. - Dobre praktyki inżynierskie: testy, refactoring, czytelny kod, odpowiedzialność za dowiezienie. - Komunikatywność i nastawienie na współpracę z zespołem oraz klientem. - Bardzo dobra znajomość języka angielskiego (komunikacja w projekcie). - Bardzo dobra znajomość języka polskiego. 🔧 Stack technologiczny Nowa aplikacja (front-end): React + Node.js (TypeScript mile widziany). Dodatkowo w projektach spotkasz też typowe elementy współczesnego SDLC: REST/HTTP API, testy, CI/CD, praca zespołowa w iteracjach. Obecnie (back-end): Python + Django (system istniejący, z którego korzysta nowa aplikacja). Codzienne zadania: - Rozwój nowej wersji aplikacji (front-end) w nowym stacku, przy ścisłej integracji z istniejącymi usługami back-end. - Współpraca z zespołem w analizie domeny i procesów (royalty collection) oraz przekładanie wymagań na rozwiązania techniczne. - Dostosowanie procesu SDCL do integracji z technologiami AI. - Dbanie o jakość: testy, code review, standardy wytwarzania, czytelność i utrzymywalność kodu. - Współpraca z klientem (międzynarodowe środowisko) i wspólne wypracowywanie rozwiązań.
Lead FullStack Software Engineer
N-iX
⚲ Kraków, Wrocław, Warsaw
22 959 - 28 514 PLN (B2B)
Wymagania
- C#
- AWS
- React
- .NET
- JavaScript
- Design Patterns
- AI
- SDK
- SQL
- NoSQL
- GraphQL
- Redis
- HTML
- CSS
- SSR
- Next.js
- Angular
- Docker
- Git
- CD pipeline
- Datadog
- Testing
- Vue.js
- Content management system (nice to have)
O projekcie: About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Wymagania: - 5+ years developing reliable, highly available, and scalable software systems - Strong understanding of software architecture and design patterns - Firm grasp of clean code principles and coding standards - Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development - Experience integrating AI tooling into your development environment for streamlined usage - Experience with AI Frameworks like Vercel AI SDK, LangChain, etc. - Strong proficiency with the following technologies: C# + Typescript - Strong proficiency with SQL & NoSQL datastores (GraphQL, Redis) - Strong proficiency with frontend development (HTML, CSS, JavaScript) - Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js. - Hands-on experience developing and maintaining 3rd party content management systems - Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker - Experience with APIs and developing in a service-based application environment - Experience building optimized UIs for performance - Proficiency with version control systems such as Git - Experience working within a formal CI/CD pipeline - Experience with logging, monitoring, and alerting services like Datadog, Newrelic - Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend - At least Upper-intermediate English level - This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately. Codzienne zadania: - Developing fast, high-traffic public-facing websites - Explore new technologies and help the team to use them - Work using AI tools and apply them to the SDLC - Following software development best practices while delivering the work - Following testing principles while testing your own code to ensure production readiness - Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes)
Lead Architect
NFQ Technologies
⚲ Kraków
23 688 - 35 448 PLN (B2B)
Wymagania
- PHP
- Symfony
- JavaScript
- React
- AWS
- MySQL
- Docker (nice to have)
O projekcie: We build the tech that moves industries forward. We have our eyes set on AI, energy, logistics, sports and other complex and exciting segments. We believe in an innovative approach to solving deep issues and encourage our people to find their own solutions. We are constantly rethinking processes, business models, architecture, and tech stacks. We foster a sense of curiosity, experimentation, and passion beyond code. With us, you can easily deepen your knowledge in any field you’re curious about. And because we work across many industries, you’ll be gaining the experience others can only dream of. Our client Smoobu is a fast-growing startup in the vacation rental industry. Smoobu’s all-in-one SaaS solution for private hosts currently manages over 70,000 properties across more than 120 countries. Smoobu’s priority is to help its hosts efficiently manage and grow their business. You will work across multiple engineering teams in a young, ambitious, and international environment representing over 28 nationalities. This is a high-impact individual contributor role with no direct reports - focused purely on architecture leadership, mentorship, and technical decision-making. As Smoobu continues to scale and innovate, they are looking for a business-curious full-stack technologist eager to take on the challenge of shaping the technical future of the vacation rental industry and taking it to the next level. Wymagania: - Demonstrated ability to design and build large-scale, highly complex systems - A proven track record of proposing and delivering high-impact technological initiatives - Experience leading technical programs spanning multiple engineering teams - Deep hands-on expertise with AWS or comparable cloud platforms - Strong practical experience in AI-driven coding, including establishing robust and efficient development environments - Solid working knowledge of PHP, JavaScript, and React.js - Expert-level proficiency in at least two database engines - Exceptional prioritization and decision-making skills - A business-minded full-stack technology perspective, with a strong focus on outcomes over processes - Fluency in English, both written and spoken, with the ability to clearly communicate complex technical concepts to diverse audiences Codzienne zadania: - Define the architectural strategy, establish priorities, and drive execution across all technical initiatives - Design the most complex and high-impact technical solutions, leading critical decisions and ensuring alignment among multiple engineering teams and stakeholders - Coordinate Global Tech Debt Resolution program to maintain development pace. Set standards, keep raising the quality bar - Research and discover emerging technology opportunities to generate significant business impact and secure competitive advantages. Contribute hands-on implementing proof of concept or critical strategic solutions - Coach and mentor engineers across teams, providing architectural guidance and high-quality technical feedback. Foster a culture of learning, ownership, and engineering excellence. This role has no direct reports, enabling full focus on architecture, mentorship, and technical decision-making - Own hosting infrastructure, ensure fit-to-purpose and cost efficiency
Fullstack Developer with Java
Reply Polska
⚲ Katowice
12 600 - 22 680 PLN (B2B)
Wymagania
- Java
- Spring
- Spring Boot
- Hibernate
- Angular
- TypeScript
- RxJS
- Kubernetes
- GitLab
- JUnit
- Mockito
- Jest
- Jasmine
- Cypress
O projekcie: About Fincon Reply Fincon Reply is a business and IT consultancy specializing in the financial services industry. Fincon Reply proactively advises banks, the Sparkassen Finance Group, insurance companies and near-financial companies as well as their suppliers on their digital transformation. The company provides on-site support with specialised teams of consultants and developers and delivers turnkey solutions Benefits: - Motivizer Benefits Platform to choose and manage all your benefits in one place. You receive a budget (550 PLN monthly). You can choose medical care package, meal tickets, sports cards (we have Multisport and on preferential terms, we have membership cards to one of the most popular Gyms), cinema tickets, shop vouchers, discounts and many more. - Language Courses – you'll have access to a multi-language learning platform enabling you to practice you language skills and learn new ones! - Regular and systematic further training opportunities - both internally and from external providers. We support your ongoing learning and development. - Cooperation within an internal community is our everyday reality. We have networking events, coding challenges, and company parties for different occasions. Wymagania: - Very good communication skills in English and Polish. - Communication skills in German is a plus. - Successful completion of higher education as a qualified IT specialist or university degree in computer science. - At least 3 years of experience working as a Backend or Fullstack developer. - Experience in code testing. - Experience working in an agile environment. - Experience working in a self-organized team. - Good familiarity with Jira and Confluence. Codzienne zadania: - You are a member of a team for dedicated customer in the German financial industry. - You work with a technology stack: - Backend: Java 21, Spring 6, Spring Boot 3, Hibernate, - Frontend: Angular 19. Typescript, Web Components, RxJs, - and Kubernetes, Gitlab, Sonar, Junit, Mockito, RESTAssured, Jest, Jasmine, Cypress. - You are responsible for the product you build. - You proactively bring in ideas to create innovative solutions. - You work in an agile environment, using scrum. - You meet with your team in the office (Katowice) at least once a month to plan your work and discuss progress. - You take responsibility in a self-organized team.
Fullstack Developer (Cloud)
ITFS Sp. z o.o.
⚲ Warszawa
25 200 - 27 720 PLN (B2B)
Wymagania
- Python
O projekcie: - Miejsce pracy: Warszawa (2 razy w tygodniu) - Start: 16.03 - Forma współpracy: B2B z ITFS - Stawka: 150-165 PLN netto + VAT/h Wymagania: - Python & Flask – do tworzenia backendu i rozwiązań automatyzacyjnych - Bazy relacyjne (PostgreSQL, Oracle DB) – do zarządzania, zapytań i optymalizacji przepływów danych - CI/CD & Automatyzacja testów – dla niezawodnych wdrożeń i solidnych praktyk testowych - Usługi Azure – do zarządzania infrastrukturą chmurową, wdrożeń i monitoringu - Docker & Kubernetes – do wdrażania aplikacji w kontenerach i orkiestracji - Angular – do tworzenia interfejsów webowych i integracji - Współpraca w Agile – efektywna praca w zespołach cross-funkcjonalnych i odpowiedzialność za zadania Mile widziane: - Znajomość certyfikatów gazowych – wspierająca procesy zgodności i walidacji specyficzne dla branży P3180 Codzienne zadania: - Rozwój i utrzymanie automatyzacji procesów rejestracji transakcji, przeglądu i rozliczeń w Trading Front i Back Office - Zapewnienie bezpieczeństwa systemów, zgodności z regulacjami oraz dobrych praktyk governance (testy, logowanie, monitoring) - Współpraca z zespołem i interesariuszami w celu dopasowania produktu do potrzeb biznesowych i technicznych - Udział w pipeline’ach CI/CD i wdrożeniach chmurowych (Azure, Docker, Kubernetes) - Wdrażanie najlepszych praktyk operacyjnych, w tym optymalizacja kosztów, monitorowanie i niezawodność systemów - Odpowiedzialność za przypisane zadania oraz proaktywne usprawnianie procesów i rozwiązań
Full-Stack Developer
Deutsche Telekom TSI Hungary Kft.
⚲ Budapest, Pécs
10 889 - 21 778 PLN (PERMANENT)
Wymagania
- Spring Core
- Spring Security
- JPA
- Java
- REST
- SOAP
- ELK
- Grafana
- Docker
- Kubernetes
- GitLab
- OWASP
- AWS Cloud (nice to have)
- Kafka (nice to have)
- JMS (nice to have)
- React (nice to have)
- Angular (nice to have)
O projekcie: As Hungary’s most attractive employer in 2025 (according to Randstad’s representative survey), Deutsche Telekom IT Solutions is a subsidiary of the Deutsche Telekom Group. The company provides a wide portfolio of IT and telecommunications services with more than 5300 employees. We have hundreds of large customers, corporations in Germany and in other European countries. DT-ITS recieved the Best in Educational Cooperation award from HIPA in 2019, acknowledged as the the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team. Our Tech Stack (TVPP Technologies): - Backend: Java, Kotlin, Spring Boot, SOAP, REST - New B2B-Monitoring: Spring Boot (Rest, Security, Data, Batch), ELK, Angular, Typescript - Frontend: JSF/PrimeFaces, React, JavaScript, HTML5, CSS3 - DevOps & Infrastructure: AWS Cloud, Kubernetes, Docker, Oracle SQL - Tools & Processes: Git, GitLab CI/CD, Maven, Gradle, NPM * Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation. Wymagania: Core Technical Requirements (Most Important) - Deep knowledge of Spring Core (IoC, bean lifecycle, AOP, scopes) - Strong experience with Spring Security (authentication, authorization, OAuth2, SAML, session handling) - Solid expertise with Spring Data (JPA) and relational databases - Extensive experience designing and implementing REST and SOAP services - Strong Java knowledge (Java 11+) and enterprise application design System Design & Architecture - Strong system design skills - Knowledge of core design patterns and architectural principles - Experience designing scalable, secure enterprise systems - Ability to analyze trade-offs and propose sustainable technical solutions Production & Operations Experience - Real production experience maintaining enterprise applications - Ability to investigate complex production issues - Experience with monitoring and metrics tools (e.g., ELK, Grafana) - Understanding of performance tuning and troubleshooting under load DevOps & Infrastructure - Hands-on experience with Docker - Experience deploying applications to Kubernetes - Familiarity with GitLab CI/CD pipelines - Understanding of deployment strategies and environment configuration Security Awareness - Strong understanding of secure coding practices - Awareness of OWASP recommendations (e.g., OWASP Top 10) - Experience implementing secure authentication and authorization flows - Understanding of common web vulnerabilities and mitigation strategies Nice to Have - Experience with AWS Cloud - Messaging systems (Kafka, JMS) - Experience with enterprise integration patterns - Frontend frameworks (React, Angular) Soft Skills - Strong communication skills - Ability to challenge and refine requirements - Fluent technical English - Ownership mindset and proactive approach Codzienne zadania: - Backend development with Spring-based enterprise applications (80%) - Integration with internal and external systems via REST and SOAP - Secure API design and implementation - Production support, monitoring, and performance optimization - Occasional frontend work (JSF/React/Angular) (~20%)
Full Stack Fejlesztő
EPDS Szoftverfejlesztő Kft
⚲ Budapest
9 800 - 15 244 PLN (PERMANENT)
Wymagania
- SQL
- Node.js
- Python
- Angular
- Git
O projekcie: 30 éves múlttal rendelkező ipari profilú magyar tulajdonú cégcsoport dinamikusan fejlődő szoftverfejlesztő csapatába Full Stack fejlesztőt keres. - Modern technológiák: Aktívan dolgozunk AI integrációkkal (OpenAI, RAG folyamatok, Pinecone), így nálunk a gyakorlatban tanulhatod meg a legfrissebb tech-stack használatát. - Rendszerstabilitás: Saját termékeket építünk egy compliance heavy környezetben, ezért fontos nekünk az auditálhatóság és a megbízhatóság. - Változatos platformok: segítünk, hogy minden területen magabiztosan mozogj. Te vagy az ideális jelölt, ha: - Érdekel az üzleti logika: Nem csak a "hogyan" érdekel, hanem a "miért" is. Tudsz kérdezni, ha valami nem egyértelmű a felhasználó szempontjából. - Full stack attitűdöd van: A teljes képet nézed, és fel mered vetni az önálló ötleteidet - Tanulni vágysz: Megvan benned a "drive", az új megoldások megismerésére. Technikai stack: - Backend: Node.js, MongoDB, python (nem kizáró, de előny), SQL (nem kizáró, de előny) - Frontend: Angular, Ionic – mobil (nem kizáró, de előny) - Infrastructure: Azure, GitHub Actions, Docker - AI: AI eszközök agabiztos használata mellet az OpenAI API és Pinecone (RAG architektúra) ismerte előny Nálunk a fejlődés alapvető, ezért nem várjuk el, hogy mindenhez érts már az első napon. Ha az alábbiak közül több területen is otthonosan mozogsz, és van kedved a többit nálunk elsajátítani, várunk a csapatba! Amit mi adunk cserébe: - Stabil szakmai háttér: - Szakmai autonómia: Nincs mikromenedzsment. Megkapod a bizalmat és a teret az önálló munkához. - Látható eredmények: Amit fejlesztesz, azt hamarosan látod az éles termékben és a felhasználóknál. - Fejlődési görbe: Olyan modern területeken (AI, cloud-native megoldások) szerezhetsz mély tudást, ami jelenleg a piac élvonala.
Full Stack Developer (Java, TypeScript) (m/k/n)
UPVANTA SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
⚲ Wrocław
Wymagania
- Java
- Spring
- Oracle
- PostgreSQL
- Kafka
- PL/SQL
- SQL
- MongoDB
- JavaScript
- TypeScript
- React
- Angular
- HTML
- CSS
- Git
- GitLab
- Jenkins
- Docker
- Kubernetes
- AWS
Zakres obowiązków: - Projektowanie i rozwój backendu w Java (Spring Boot) - Tworzenie i utrzymanie REST API - Praca z bazami danych Oracle / PostgreSQL (SQL, PL/SQL) - Współpraca przy rozwoju warstwy frontendowej (React / Angular) - Utrzymanie wysokiej jakości kodu (Clean Code, code review) - Analiza wymagań biznesowych i proponowanie optymalnych rozwiązań - Optymalizacja wydajności aplikacji - Współpraca z zespołem QA, DevOps oraz biznesem - Tworzenie dokumentacji technicznej
Back-End/Full-Stack Developer
Cognitran
⚲ Szczecin, Poznań
18 480 - 30 240 PLN (B2B)
Wymagania
- Java
- AWS
- DynamoDB
- S3
- API Gateway
- Lambda
- Python
- SQL
- Terraform
- React (nice to have)
O projekcie: Established in 2000, Cognitran provide complete, end-to-end e-business solutions in the area of multi-lingual content management and publication. Specialising in market leading After Sales Solutions, we partner with OEMs to provide innovate, scalable and compliant systems with complimentary professional services. Delivering VIN / Serial No specific repair, maintenance and diagnostic information to customer technicians deployed in the field and to offer vehicles owners creative and easy to use digital functionality. Cognitran helps OEMs gain control over complex business activities and provides solutions for the delivery of information to end users. Over 400,00 users benefit from using our solutions in servicing and repair operations globally: - SaaS solutions for After Sales and Servicing - Simplified management of complex data and workflows - Solutions meet RMI legal requirements for Europe, Americas and Asia Pacific Cognitran solutions are built using non-proprietary, modular software and techniques. Existing work has met industry-wide acclaim through our use of pioneering technology, particularly in cloud systems. Cognitran solutions and technical expertise offer enhanced operational performance, improved customer satisfaction and cost reduction. Solutions deliver efficiencies by re-using data across multiple information types and programs while linguistic tools reduce translation costs and complexity. Headquartered in the UK, Cognitran also has development centres in Poland and the United States. Wymagania: To excel in this role you need to: - Be a proactive developer who is not afraid to openly discuss current architecture and solutions and suggest improvements. - Be able to communicate effectively in English. - Work well within a team, share knowledge and understand that team success depends on its members supporting each other. - Take ownership of your responsibilities. - Have experience in Java and web development. Codzienne zadania: - Write high quality, maintainable code. - Participate in team meetings. - Review code produced by your team members. - Follow XP practices.
Staff/Lead Fullstack Engineer (Data Structures Expert)
Mimica
⚲ Buenos-aires, São Paulo, Amsterdam, Dublin, Berlin, Barcelona
Wymagania
- Node.js
- React
- Redux
What we are building Mimica's mission is to empower enterprises, teams, and individuals to reclaim their most precious resource — time and work more efficiently, with greater purpose and impact. Our AI-powered task mining observes employee actions across the desktop and categorizes them into detailed process maps. Mimica’s process intelligence highlights inefficiencies, prioritizes improvements based on ROI, recommends the optimal technology for automation (RPA, intelligent document processing, GenAI), and provides a blueprint for building new automations and transforming work. Our approach to engineering * We prioritize customer needs first * We work in small, project-based teams * We have flexibility in terms of the problems we work on * We own the full lifecycle of our projects * We avoid silos and encourage taking up tasks in new areas * We balance quality and velocity * We have a shared responsibility for our production code * We each set our own routine to maximize our productivity Your mission In this role, your mission will be to improve and expand the capabilities of the Mimica Webapp (MERN stack). This means designing a robust architecture, developing new features, releasing improvements to existing components and taking operational responsibility for what you build. You will seek to understand user needs and pain points, experiment and iterate on your solutions, leveraging tight feedback loops. You’ll have the opportunity to shape our technical direction, processes and culture. Part of your day-to-day * Developing a visualisation tool and a data-rich dashboard that display process flows and metrics in novel ways, with scalability in mind. * Building interfaces and real-time frontend services that enable multiple users to edit graph data and re-train AI models through their input. * Owning projects end-to-end as part of small teams, collaborating with our TLs and Product Managers. * Participating in architectural decisions, collaborating across teams to identify and implement product improvements and producing documentation for your implementations. * Providing feedback to peers through RFCs, code reviews and helping those around you to level up. * Participating in hiring and onboarding new team members; taking on end-to-end project management responsibilities as we grow. Location This is a fully remote position. You can be based anywhere in the UK, Americas, or Western Europe within a UTC-6 to UTC+1 timezone.
Staff Software Engineer, Product Engineering, EU
Ashby
⚲ Lisbon, Barcelona, Berlin, Copenhagen, Stockholm, Amsterdam
From 11 700 EUR (UoP)
Wymagania
- TypeScript
- React
- Node.js
- PostgreSQL
- GraphQL
About the Role and How We Work Our engineering culture strives to recreate the environments where we did our best work as ICs – where we had the ownership and agency to impact our users with creative and innovative software. I started my career building software for artists in the Visual Effects industry. It was a formative experience for me as a software engineer because success relied on my ability to be a product manager and designer. I talked to artists to understand their needs. I came up with ideas. I did industry research, designed interfaces, and prototyped ideas. I watched artists use what I built and decided what to tackle in the next iteration. No daily stand-ups, no t-shirt sizing, no planning meetings. I studied computer science to solve problems, not tickets, and this felt exactly like that. I not only felt creative and fulfilled but the agency and ownership we were given as engineers powered an incredible amount of innovation. Innovation came differently (or not at all) at technology startups beyond the seed stage, often through an engineer’s force of will and ability to push back against culture (rather than any encouragement from it). Engineering was narrowed to implementation and delivery, partly due to the influence of other departments and partly due to the influx of "Agile" processes like sprint planning. In those companies, I felt like a JIRA jockey. At Ashby, we’re building an environment that is optimistic about what engineers can own and achieve. An environment that embraces innovative engineers, and, frankly, often stays out of their way. As a Product Engineer, you’ll take ownership over a large portion of one of our products and own projects end-to-end (wearing hats traditionally worn by product and design). You’ll research competitors, write product specs, make wireframes, and more. To ground it with examples, product engineers at Ashby have: - Designed and built automated interview scheduling. This feature automates scheduling by calculating possible times from a pool of interviewers and other constraints, and then presenting these times to the candidate for selection via our responsive web app. This solves the “Calendar Tetris” problem I talk about in "What We're Building." - Built a generalized declarative filter architecture that allows users to create complex filters for any record with a consistent UI and compile it to SQL in our backend. Many user-facing features use it. - Specced, designed, and implemented a feature that allows users to complete signing offers entirely within Ashby. This project involved talking to customers to understand their requirements, deciding what technologies to use, building a prototype, and working with other team members to integrate the final implementation into additional features. What We’re Building As engineers, we are used to tooling that makes us better at what we do. When we started Ashby, we saw the opposite with Talent Acquisition software. Recruiting teams were leveling up how they did their work, but instead of software meeting this new standard, it held them back. Scheduling a final round is an excellent example. Recruiting teams wanted to schedule candidates faster, track interviewer preparation and quality, and do it with half the headcount. A recruiter needed to manually collect availability from the candidate, identify qualified interviewers, perform “Calendar Tetris” to find who is available to interview the candidate, schedule on the earliest date possible, and make any last-minute adjustments as availability changed. They must do this while considering the interview load on each individual and whether interviewers need to be trained and shadowing others. 🥵 TA software didn’t help. As hiring managers, we know TA is a critical function, and as engineers, we know software can do better. So, we built and continue to build Ashby to give TA teams the highest standard of tooling. Software that’s intelligent and powerful. Software that provides insights into where they’re failing and automates or simplifies many of the tasks they’re underwater with. We want other functions and departments to be jealous of what TA teams can do with Ashby, and today they often are! Engineering Culture Our engineering culture is motivated by Benji’s (my Co-founder and CEO) and my belief that a small, talented team, given the right environment, can build high-quality software fast (and work regular hours!). We do it through: - Minimal process with ownership over decisions normally made by product and design - Natural collaboration and deliberate communication - Investing in tools and abstractions that give us leverage - Putting effort into building a diverse team Minimal Process & Lots of Ownership The best engineers we’ve worked with delivered reliably magical outcomes. They took customer problems and relentlessly drove them to solutions that were not only successful but often brilliant and creative. While they did this with minimal oversight, stakeholders were never in the dark as to what was going on, and no setback was a surprise. Traditional product-development processes aren’t meant for the best engineers. Their purpose is to create consistent outcomes regardless of the engineer’s skill. But, consistency comes at the expense of an engineer’s time and freedom—both ingredients necessary to generate those magical outcomes. As a result, process stifles the best engineers and doesn’t give others the opportunity to practice the behaviors that made the best engineers the “best.” At Ashby, we want to build an environment that encourages every engineer to be their best. So, at Ashby, every Engineer runs their project. Product Managers (and Designers) build strategy, do customer research, and hand off problem briefs to Engineers. Engineers take on the rest: they research the problem, write product specs, build wireframes, and implement their solution end-to-end. We rely on engineers, not process, to push information outward to the relevant folks (e.g., Product Managers) and pull folks in to help (e.g., Designers, Infra). It’s a new level of ownership for many engineers, but we’d rather an engineer fail a bit and coach up their skills than use process as a crutch. Not everyone succeeds in our culture, but those who do thrive. Collaboration is Natural & Communication is Deliberate Our engineering team consists of lifelong learners who are talented but also humble and kind (meet them here!). These attributes create an environment where collaboration happens naturally. We combine this with research, prototyping, and written proposals to see around corners and get feedback from the team across time zones. Focus time is something that we hold sacred, and, with thoughtful and deliberate communication, engineers are in <2h meetings per week (I wrote about it here). To drive it home, here's a recent calendar of an engineer who has been with us for over 4 years: We also meet in person at least twice a year, once as a department and once as a company. You also have a small budget to meet up with folks in your city/region. Increase Leverage, not Team Size We built Ashby with the quality, breadth, and depth that many customers would expect from much larger teams over larger time scales. We’ve done this through investment in: - Great developer tooling. Our CI/CD takes ~10m, and we deploy at least 15x a day. A debugger that works out of the box. Everyone on the team has contributed to our developer experience 💪🏾. - Building blocks to create powerful and customizable products fast. At the core of Ashby is a set of common components (analytics modeling and query language, policy engine, workflow engine, design system) that we constantly improve. Each improvement to a common component cascades throughout our app (short video below). Here’s an impromptu quote from Arjun in our company Slack of what it’s like to build a feature at Ashby: And a demo of one of these building blocks: Put Effort into Diversity Diverse teams drive innovation and better outcomes. Having seen my mother and partner build their careers as minority women in non-diverse fields, I want to make sure Ashby creates opportunities for the next generation of engineers from underrepresented groups. Today, 21% of engineers at Ashby are from underrepresented groups. It’s not great, and we are taking conscious steps to improve, like sourcing diverse candidates, providing generous paid family leave, no leetcode interviews, and more. Interview Process At Ashby, our team and interview process want to help you show your best self. We’ll dive into past projects and simulate working together via pair programming, writing product and tech specs collaboratively, and talking through decisions. There are no leetcode or whiteboard exercises. Our interview process is three rounds: - Introduction call with Hiring Manager (15 to 30m, live) - A technical screen where we pair in our actual codebase (1h, live) - Three non-coding interviews that focus on product thinking, technical design, and infrastructure (3h 15m, live can be split across multiple days) Depending on our leadership team’s bandwidth, we may start with an additional 30m screen with a recruiter. Your hiring manager will be your main point of contact and prep you for interviews. Each round will have written guidance so you know what to expect (you’ll need minimal preparation). You’ll meet 4 to 6 people in engineering (with 5-15 minutes in each interview to ask them questions). If we don’t give an offer, we’ll provide feedback! Your First Three Months at Ashby We want an exceptional onboarding experience for every new hire. At Ashby, your dev environment is set up with a single script, you push your first product change on day one, and you spend the rest of your time shipping product changes that give you a tour of our codebase and best practices. The product changes increase in scope and ambiguity from simple copy changes to the delivery of a prominent, impactful feature. Your manager will do a 30, 60, and 90-day review to give feedback and calibrate on how we work together. It’s a team effort to get you successfully onboarded; you’ll have a peer paired with you to answer questions, pair program, and check in often to see if you need help. The rest of the team will run training sessions on our culture, product, engineering process, and technical architecture. Technology Stack I’m sharing our tech stack with the caveat that we don’t require previous experience in it (but a love of typed languages is helpful 😀): TypeScript (frontend & backend), React, GraphQL API, Node.js, Postgres, Redis. When they joined Ashby, many of our engineers switched from other languages like Swift and Kotlin (Ben), platforms like iOS (Tom) and Windows (Sergey). We care more about fundamentals (e.g., debugging, abstractions) and how fast you learn. For folks on the team who switched, it's nice seeing changes hot reload versus waiting for XCode to compile 😅.
Software Engineer
Joko
⚲ Barcelona
About Joko At Joko, we help consumers shop smarter. Our mission is to revolutionize shopping, empowering people to find what they need, make informed decisions, and save money. Founded in Paris, Joko is a tech company and certified B Corp with over 90 talents across Paris, Barcelona, and New York (and beyond). More than 5 million users already save money every day at 10,000+ merchants with Joko. From cashback and automatic coupons to price alerts and carbon tracking, we keep expanding our products to make shopping smarter. We’re now building an AI-powered shopping assistant to help users find the best products by price, quality, and impact. Having reached profitability in our core market, we’re now scaling globally, with a strong focus on the US. It’s still day 1, come build the future of shopping with us! This position is remote-friendly (France and Spain). Our Engineering Teams As a Software Engineer, you’ll have the opportunity to apply your skills across a wide range of cutting-edge technical challenges and impactful projects. Depending on your expertise and interests, you could contribute to one of the following key areas: - Tech: Collaborate with the Product team to innovate on Joko’s user-facing products and shape the future of the online shopping experience, taking full ownership from conception to deployment. You will tackle complex engineering challenges such as developing AI-powered shopping assistants or crafting scalable algorithms that are capable of extracting, structuring, and leveraging massive quantities of data from all e-commerce sites worldwide. - Operations: Support all teams at Joko by designing and implementing software solutions that enhance efficiency at scale. You will work on projects like building the customer support stack to solve our users’ problems, improving fraud detection mechanisms, or creating AI assistants to optimize team operations. What You Will Do At Joko, we believe in ownership and versatility. You will take complete ownership of your projects, steering them from the initial blueprint to their deployment in production, ensuring excellence and innovation at every turn. We aim to assemble versatile teams of engineers, not confined to narrow specialties (e.g., mobile development, ML engineering, infrastructure, etc.). We seek individuals with broad technical skills, capable of applying their knowledge to tackle complex, multi-domain engineering challenges. As a Software Engineer, your responsibilities will include: - Software design & development: Translate product visions or operational needs into robust software architectures, implementing them across our stack to ensure an exceptional user experience. - Technical exploration & problem-solving: Dive into challenging technical problems, often involving new and undefined areas, using innovative approaches to develop practical solutions. - Deployment & impact monitoring: Take projects from development to deployment, collaborating with Product and Data teams to monitor their impact. - Technical leadership: Mentor junior engineers, review technical specs and code, and steer technical discussions. - Strategic collaboration: Work closely with the Product and Operations teams to align technical projects with company goals. - Process & tool enhancement: Continuously evaluate and improve team processes and tools to ensure maximum efficiency and effectiveness.
Software Engineer
Edpuzzle
⚲ Barcelona
From 3 100 EUR (UoP)
Wymagania
- React
- Redux
- Node
- Express
- MongoDB
About us Edpuzzle is a leading edtech company with offices in San Francisco and Barcelona and over 12 years of history helping teachers find and create exciting, interactive learning experiences. We're a software company built by teachers, for teachers, committed to empowering educators with intuitive software to engage students all in one place, from video learning and beyond. Millions of teachers and students around the world are already using Edpuzzle to make education more equitable and engaging. If you’re passionate about making an impact and find joy in learning, you’ll feel right at home with us. Check out the job details below to see if Edpuzzle could be the right fit for you! About working at Edpuzzle Working at Edpuzzle means joining a global team dedicated to enhancing education for all. Picture a place where you can connect with your teammates, whether remotely or in person, whenever you need support. A place where one day you're helping shape one of the biggest edtech platforms in the world, and the next day you're doing a teambuilding activity with your coworkers. A place where everyone has been selected because they're the best at what they do, and where your manager and team trust your decisions fully. We value work-life harmony, which is why we’ve embraced a “remote-first” approach that emphasizes flexibility and choice while fostering meaningful engagement. It's no surprise that in our latest employee satisfaction survey, Work-Life Balance (92%), Leadership (85%), and Employee Engagement (84%) were highlighted as our top drivers, because we genuinely care about creating an environment where people can thrive, feel supported, and do their best work. A place where you're encouraged to learn and grow, because education is the cornerstone of everything we do. About the role We’re looking for our next Software Engineer to join our Product Team in Spain. The right person will help us create the best possible product for teachers and empower them to engage their students with videos. If you’re a self-starter who’s eager to contribute to the education sector, you’ll feel right at home with us. As a Software Engineer, you’ll be responsible for working on all front-end, mobile and back-end sides of our software. You will participate in the design, creation, and maintenance of features, writing clean, functional, testable, and scalable code as well as fixing bugs or other coding issues. You will also continuously learn with the aim to be able to work on problems with increasing complexity, including the possibility of starting to lead projects with technical complexity, product complexity, or both. Technically speaking, we use React and Redux for our frontend and Node and Express applying DDD and hexagonal architecture in the backend. We use MongoDB for our database and are fully hosted on AWS which we also use to store, encode and stream our own pool of videos. We work with testing, trunk based development, CI/CD, and follow best practices making sure we never compromise on code quality and reliability. About our team We are a product-focused team. Our methodologies foster close partnerships between Engineering, Product, Infrastructure, and other key areas (Design, Data, QA, Security, etc.). Everyone is encouraged to share their ideas and opinions, take initiative, and be resourceful when coming up with creative solutions that elevate the experience for our users. Our Engineering team is organized around cross-functional and rotational full-stack projects, with teams of 3 to 5 Engineers on each project providing diverse perspectives and skills. At our core is an environment where every voice is heard and valued, and each team member plays a role in shaping project strategy and designing technical solutions. We embrace proactiveness and curiosity to understand the bigger picture. Engineers are not just encouraged but expected to think critically, propose solutions, and take ownership. We’ve built a culture where ideas are shared openly, challenges are tackled head-on, and assumptions are questioned to drive continuous improvement. Curious to learn more about our Product team and Engineering culture? Don’t miss these talks: • Santi Herrero (Co-founder and CTO) at SCPNA 2024, SCBCN 2024 and Edpuzzle Tech Discovery 2025 gives insights on the deliberate choices behind our structure and growth. • Santi Herrero (Co-founder and CTO) and Ferrán Martín (Engineering Manager) share how we migrated and implemented hexagonal architecture and DDD in this stream with midudev. • Asier Zapata (Engineering Manager) shares how our team successfully brings AI to production in a scalable and reliable way in this Edpuzzle Tech Discovery 2025 talk. About the job - Work with the Product and Engineering teams to find the best technical solutions by participating in discussions and sharing your opinions. - Take ownership of the problems that are being worked on, understanding why they are needed by the users, carrying out your own research, making your own proposals and working on the implementation while relying on your teammates for help when needed. - Communicate effectively in a team in order to maximize productivity, ownership, and focus to help projects reach the finish line with the best possible outcome and by the project deadline. - Develop pixel perfect designs following the indications of the Design team. - Develop simple, clear, functioning, and testable code. - Take an active role in learning the different parts of Edpuzzle’s software and understanding why it is built the way it is, while relying on more experienced teammates for help when needed. - Troubleshoot, debug and upgrade software. - Write technical documentation. - Perform other duties as assigned.
Senior Software Engineer, Product Engineering, EU
Ashby
⚲ Lisbon, Barcelona, Berlin, Copenhagen, Stockholm, Amsterdam
From 8 100 EUR (UoP)
Wymagania
- TypeScript
- React
- Node.js
- PostgreSQL
- GraphQL
About Ashby Ashby is a growth-stage startup with tens of millions in ARR, growing over 100% year over year, very low churn, and many years of runway. We have notable customers like Notion, Linear, Shopify, and Snowflake. About the Role and How We Work Our engineering culture strives to recreate the environments where we did our best work as ICs – where we had the ownership and agency to impact our users with creative and innovative software. As a Product Engineer, you’ll take ownership over a large portion of one of our products and own projects end-to-end (wearing hats traditionally worn by product and design). You’ll research competitors, write product specs, make wireframes, and more. To ground it with examples, product engineers at Ashby have: - Designed and built automated interview scheduling. This feature automates scheduling by calculating possible times from a pool of interviewers and other constraints, and then presenting these times to the candidate for selection via our responsive web app. This solves the “Calendar Tetris” problem I talk about in "What We're Building." - Built a generalized declarative filter architecture that allows users to create complex filters for any record with a consistent UI and compile it to SQL in our backend. Many user-facing features use it. - Specced, designed, and implemented a feature that allows users to complete signing offers entirely within Ashby. This project involved talking to customers to understand their requirements, deciding what technologies to use, building a prototype, and working with other team members to integrate the final implementation into additional features. What We’re Building As engineers, we are used to tooling that makes us better at what we do. When we started Ashby, we saw the opposite with Talent Acquisition software. Recruiting teams were leveling up how they did their work, but instead of software meeting this new standard, it held them back. Scheduling a final round is an excellent example. Recruiting teams wanted to schedule candidates faster, track interviewer preparation and quality, and do it with half the headcount. A recruiter needed to manually collect availability from the candidate, identify qualified interviewers, perform “Calendar Tetris” to find who is available to interview the candidate, schedule on the earliest date possible, and make any last-minute adjustments as availability changed. They must do this while considering the interview load on each individual and whether interviewers need to be trained and shadowing others. 🥵 TA software didn’t help. As hiring managers, we know TA is a critical function, and as engineers, we know software can do better. So, we built and continue to build Ashby to give TA teams the highest standard of tooling. Software that’s intelligent and powerful. Software that provides insights into where they’re failing and automates or simplifies many of the tasks they’re underwater with. We want other functions and departments to be jealous of what TA teams can do with Ashby, and today they often are! Engineering Culture Our engineering culture is motivated by Benji’s (my Co-founder and CEO) and my belief that a small, talented team, given the right environment, can build high-quality software fast (and work regular hours!). We do it through: - Minimal process with ownership over decisions normally made by product and design - Natural collaboration and deliberate communication - Investing in tools and abstractions that give us leverage - Putting effort into building a diverse team Minimal Process & Lots of Ownership The best engineers we’ve worked with delivered reliably magical outcomes. They took customer problems and relentlessly drove them to solutions that were not only successful but often brilliant and creative. While they did this with minimal oversight, stakeholders were never in the dark as to what was going on, and no setback was a surprise. Traditional product-development processes aren’t meant for the best engineers. Their purpose is to create consistent outcomes regardless of the engineer’s skill. But, consistency comes at the expense of an engineer’s time and freedom—both ingredients necessary to generate those magical outcomes. As a result, process stifles the best engineers and doesn’t give others the opportunity to practice the behaviors that made the best engineers the “best.” At Ashby, we want to build an environment that encourages every engineer to be their best. So, at Ashby, every Engineer runs their project. Product Managers (and Designers) build strategy, do customer research, and hand off problem briefs to Engineers. Engineers take on the rest: they research the problem, write product specs, build wireframes, and implement their solution end-to-end. We rely on engineers, not process, to push information outward to the relevant folks (e.g., Product Managers) and pull folks in to help (e.g., Designers, Infra). It’s a new level of ownership for many engineers, but we’d rather an engineer fail a bit and coach up their skills than use process as a crutch. Not everyone succeeds in our culture, but those who do thrive. Collaboration is Natural & Communication is Deliberate Our engineering team consists of lifelong learners who are talented but also humble and kind (meet them here!). These attributes create an environment where collaboration happens naturally. We combine this with research, prototyping, and written proposals to see around corners and get feedback from the team across time zones. Focus time is something that we hold sacred, and, with thoughtful and deliberate communication, engineers are in <2h meetings per week (I wrote about it here). We also meet in person at least twice a year, once as a department and once as a company. You also have a small budget to meet up with folks in your city/region. Increase Leverage, not Team Size We built Ashby with the quality, breadth, and depth that many customers would expect from much larger teams over larger time scales. We’ve done this through investment in: - Great developer tooling. Our CI/CD takes ~10m, and we deploy at least 15x a day. A debugger that works out of the box. Everyone on the team has contributed to our developer experience 💪🏾. - Building blocks to create powerful and customizable products fast. At the core of Ashby is a set of common components (analytics modeling and query language, policy engine, workflow engine, design system) that we constantly improve. Each improvement to a common component cascades throughout our app (short video below). Put Effort into Diversity Diverse teams drive innovation and better outcomes. Having seen my mother and partner build their careers as minority women in non-diverse fields, I want to make sure Ashby creates opportunities for the next generation of engineers from underrepresented groups. Today, 21% of engineers at Ashby are from underrepresented groups. It’s not great, and we are taking conscious steps to improve, like sourcing diverse candidates, providing generous paid family leave, no leetcode interviews, and more. Interview Process At Ashby, our team and interview process want to help you show your best self. We’ll dive into past projects and simulate working together via pair programming, writing product and tech specs collaboratively, and talking through decisions. There are no leetcode or whiteboard exercises. Our interview process is three rounds: - Introduction call with Hiring Manager (15 to 30m, live) - A technical screen where we pair in our actual codebase (1h, live) - Three non-coding interviews that focus on product thinking, technical design, and infrastructure (3h 15m, live can be split across multiple days) Your hiring manager will be your main point of contact and prep you for interviews. Each round will have written guidance so you know what to expect (you’ll need minimal preparation). You’ll meet 4 to 6 people in engineering (with 5-15 minutes in each interview to ask them questions). If we don’t give an offer, we’ll provide feedback! Your First Three Months at Ashby We want an exceptional onboarding experience for every new hire. At Ashby, your dev environment is set up with a single script, you push your first product change on day one, and you spend the rest of your time shipping product changes that give you a tour of our codebase and best practices. The product changes increase in scope and ambiguity from simple copy changes to the delivery of a prominent, impactful feature. Your manager will do a 30, 60, and 90-day review to give feedback and calibrate on how we work together. It’s a team effort to get you successfully onboarded; you’ll have a peer paired with you to answer questions, pair program, and check in often to see if you need help. The rest of the team will run training sessions on our culture, product, engineering process, and technical architecture. Technology Stack I’m sharing our tech stack with the caveat that we don’t require previous experience in it (but a love of typed languages is helpful 😀): TypeScript (frontend & backend), React, GraphQL API, Node.js, Postgres, Redis. When they joined Ashby, many of our engineers switched from other languages like Swift and Kotlin (Ben), platforms like iOS (Tom) and Windows (Sergey). We care more about fundamentals (e.g., debugging, abstractions) and how fast you learn. For folks on the team who switched, it's nice seeing changes hot reload versus waiting for XCode to compile 😅.
Senior Software Engineer, Payments Platform
Airwallex
⚲ Amsterdam
Wymagania
- Java
- Kotlin
- Spring Boot
- React
- Kafka
About Airwallex Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 200,000 businesses worldwide – including Brex, Rippling, Navan, Qantas, SHEIN and many more – with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale. Proudly founded in Melbourne, we have a team of over 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career, join us. Attributes We Value We hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you’re motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor. You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next. Hiring Location: Amsterdam, Netherlands (On-site, Hybrid Mode) Airwallex is a rapidly growing fintech unicorn, founded in 2015 and now flourishing at the Series F financing stage. With a global footprint across Asia-Pacific, Europe, North America, and APAC, we specialize in providing diverse financial payment solutions for B2B merchants, empowering businesses to operate seamlessly anywhere, anytime. In this role, you will: In 2025, the Payments Team is seeking a Senior Software Engineer in the Amsterdam R&D center. In this role, you will play a key part in diverse initiatives across our international payments platform. We highly value your expertise in constructing, designing, and engineering payment systems, whether it's a gateway, acquiring, issuing, or equivalent. If you're not already familiar, you'll gain comprehensive knowledge of Visa and Mastercard payment platforms. Collaboration with the payments product team and occasional interaction with partners' engineering teams are encouraged. As a vital member of our core acquiring payment team, you'll contribute to building the next-generation Payment Acceptance infrastructure with a constant focus on Merchant needs. In our Payments Team, your responsibilities extend beyond delivering product features to achieving business outcomes. Your tasks will involve developing various REST services and integration components within a backend microservices architecture, connecting with our React frontend. The scope of your role includes designing and implementing new capabilities aligned with our product roadmap, conducting architectural reviews for current and upcoming solutions, addressing tech debt, and enhancing operational effectiveness.
Senior Software Engineer (Node/Vue/TypeScript)
Reedsy
From 5 000 GBP (UoP)
Wymagania
- Node.js
- Vue.js
- TypeScript
- Redis
- MongoDB
About Reedsy We’re here to give authors the tools and resources they need to create beautiful books. Our marketplace gathers the industry's best publishing professionals — the likes of Neil Gaiman's editor, Nora Roberts' book marketer, and GRRM’s cover designer. We’ve grown to a community of 5,000,000 authors, and transformed the way people write and publish their book. Want to hop on board and help us get to our next destination? Cool, keep reading! Responsibilities You will join and work on our book editing tool. Here's what you'll do: * Work closely with our designers and engineers to design, build, and ship new features from scratch; * Extend the growing feature set of our cutting-edge, collaborative word processor; * Deliver real value to our users by crafting beautiful book templates for their e-readers and for print; * Architect and develop highly scalable web applications; * Evaluate and improve the performance, durability, and security of applications in production; * Take ownership for your tasks and see features through from start to finish; * Help teammates improve when reviewing their work and appreciate feedback when they reciprocate.
Senior Fullstak Engineer (.NET+ React)
Infolet sp. z o.o.
⚲ Kraków
29 400 - 34 440 PLN (B2B)
Wymagania
- React
O projekcie: - Relocation package (4500 PLN total value), paid in three installments (1500 PLN per month) in case your permanent presence in the office is mandatory, and you need to relocate from another city. - Benefits: Extended medical care (over 2000 medical facilities in Poland, 80 in Kraków) for you and your family; Multisport Benefit card; life insurance Wymagania: Must have - 10+ years of professional experience developing production-grade applications in the .NET ecosystem, including frontend development (preferably React) - Strong proficiency in C#, .NET, and Web API development - Hands-on expertise with React for building dynamic and high-performance web applications - Advanced experience in database design and SQL, particularly SQL Server (T-SQL, query optimization, performance tuning) - Solid experience with DevOps practices, including CI/CD pipelines - Deep understanding of the Software Development Life Cycle (SDLC) - Experience leading UI/UX initiatives or mentoring frontend developers - Familiarity with service management frameworks and ITSM tools - Experience working in enterprise or customer-facing platforms - Knowledge of modern frontend architecture patterns - Strong problem-solving skills and the ability to operate effectively in high-pressure environments - Fluent English and Polish Codzienne zadania: - Participate in software architecture design and technical decision-making - Lead UI changes and UX improvements to enhance application stability and usability - Implement solutions following best practices and design patterns - Analyze business and technical requirements and recommend solution improvements - Create clear and comprehensive technical documentation - Develop application prototypes and proofs of concept to validate designs - Manage changes through the Service Management lifecycle - Actively contribute to the automation and improvement of service management processes - Provide high-quality customer support by resolving issues efficiently - Communicate directly with customers to understand needs and deliver effective solutions
Senior Fullstack Java
Antal
⚲ Warszawa
23 520 - 26 880 PLN (B2B)
Wymagania
- Java
- Spring
- SQL
- Oracle
- PostgreSQL
- React
- Angular
O projekcie: Senior Fullstack Developer Obszar: CRM | Praca w Scrum | 100% zdalnie (z opcjonalnym biurem w Warszawie) Do zespołu rozwijającego produkty CRM poszukujemy doświadczonego FullStack Developera. Rola koncentruje się głównie na backendzie (Java + Spring Boot + Oracle), przy czym frontend stanowi do 30% zakresu pracy. Szukamy osoby, która swobodnie porusza się zarówno w świecie architektury backendowej, jak i nowoczesnych frameworków frontendowych (React, Angular). Opis projektu - Rozwój i utrzymanie systemów CRM wspierających kluczowe procesy biznesowe - Praca w metodyce Scrum - Częsta współpraca z Biznesem przy doprecyzowaniu wymagań - Wysoki nacisk na jakość, wydajność i stabilność rozwiązań Zakres odpowiedzialności Backend (główny obszar) - Projektowanie i rozwój aplikacji w Java (8–24) - Praca z Spring (1.5+) / Spring Boot - Tworzenie i rozwój REST API - Integracja systemów (Kafka jako message broker) Bazy danych - Zaawansowana praca z Oracle i PostgreSQL (SQL / PL/SQL) - Wersjonowanie schematów baz danych (Liquibase) - Praca z bazami nierelacyjnymi (MongoDB) Frontend (do 30%) - Tworzenie i rozwój komponentów w React oraz Angular - JavaScript (ES6+), TypeScript - HTML5, CSS3 / SCSS Jakość, wydajność i DevOps - Tworzenie czystego, wydajnego kodu (Clean Code) - Analiza jakości i bezpieczeństwa kodu (SonarQube) - Identyfikacja wąskich gardeł i rekomendowanie optymalizacji - Monitorowanie i logowanie (DataDog, Dynatrace) - Testy: JUnit, Jest, React Testing Library, Cypress, Playwright (mile widziane) - TDD / BDD CI/CD & DevOps: - Git, GitLab - GitLab CI / Jenkins - Docker, podstawy Kubernetes - Znajomość środowiska AWS Warunki współpracy - Start: 01.04.2026 - Współpraca długoterminowa - Możliwe wdrożenia nocne (raz na 2 tygodnie) - Praca 100% zdalna (mile widziane okazjonalne wizyty w biurze w Warszawie) Wymagania: - Minimum 4 lata doświadczenia komercyjnego - Bardzo dobra znajomość Java + Spring - Bardzo dobra znajomość SQL (Oracle / PostgreSQL) - Minimum 2 lata doświadczenia w frontendzie (React / Angular) - Doświadczenie w pracy w Agile / Scrum - Umiejętność analizy wymagań i projektowania rozwiązań - Doświadczenie w Code Review - Tworzenie dokumentacji technicznej - Język angielski – poziom techniczny (praca z dokumentacją i zespołem międzynarodowym) Szukamy osoby, która: - Jest zwinna i potrafi adaptować się do zmian - Myśli kreatywnie i stale się rozwija - Koncentruje się na potrzebach klienta - Bierze odpowiedzialność za swoje decyzje - Ceni współpracę i dobrą atmosferę - Działa z szacunkiem i empatią - Współtworzy silny, wspierający się zespół
Senior Fullstack Engineer
Insider One
⚲ Berlin, Amsterdam, London, Hamburg, Munich
Wymagania
- Go
- PHP
- Node.js
- Vue.js
- Laravel
About us Insider One is the #1 platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak potential and become unstoppable. Our story began with six desks and a vision to create a single platform to make industry-first technologies and emerging channels accessible to marketers worldwide. Today, Insider One is powered by 1,500+ team members representing 50+ nationalities across 30+ offices. With AI at its core and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS, Email, Web, App, and Site Search. We recently raised one of the largest funding rounds in the industry, a $500M Series E led by General Atlantic. We are backed by top-notch investors, including Sequoia Capital, QIA, Riverwood, and Endeavor Catalyst, and trusted by 2000+ customers from high-growth startups to the most prestigious Fortune 500 companies such as Samsung, Nike, L’Oreal, Singapore Airlines, Nestlé, Nissan, Lenovo, Puma, IKEA, Allianz, Domino's, and the list goes on. Insider One was congratulated for becoming one of the only woman-founded, women-led B2B SaaS unicorns in the world. Loved by customers, recognized by analysts, we are the only vendor recognized as the #1 leader in all the capabilities marketing and customer engagement teams need. Don’t just take our word for it — see for yourself. We consistently outperform and continue our leadership, and the results speak for themselves. From day one, Insider One’s mission has not only been to build a world-class product company, but also to create one of the most socially progressive technology communities in the world. Through our social responsibility initiatives like 100 Social Responsibility Projects, AI Training for Teachers, Code Academy, SheCodes, SheLeads, and SheMarkables, our community has committed to scaling its impact on our communities across 30+ countries, driving initiatives in health, education, farming, animal rights, and increasing women’s representation in STEM. Behind all these achievements is an exceptionally talented, visionary team of overachievers that moves fast and agile, creating cutting-edge products, and focuses on making an impact. If you want to be a part of this journey, just keep reading. And now? Now we are looking for a Senior Software Engineer who will help our team create and implement a wide variety of web-based products using Go and PHP-Laravel or Node.js and Vue.js, and wants to take their career one step further. If you think you are one of those people, here you will have the chance to work with the world's leading brands with Artificial Intelligence & Machine Learning technologies. Right now, while you are reading this, we are sending an average of 2.2 billion requests and almost 2 billion instant notifications to more than 450 servers a day. On the Artificial Intelligence and Predictive side, we have more than 100 TB of historical data. We do not wait for jobs or opportunities to come to our feet, we create them. We have now reached 25% of global users. If all these interests you, read on for more! Our Engineers and Software Developers always think with an innovative perspective, taking advantage of the inexhaustible power of the digital world. They create impressive and intelligent products like a true artist. Our Product and Development teams are located in our Istanbul and Ankara offices, so we produce and develop the technology we export to the world in our own country. As Insider, we believe in cooperation and adapting the innovations brought by technology by acting fast. We work closely with other Departments with agile teams, and we are not afraid of getting our hands dirty. As we said; we do not wait for jobs or opportunities to come to our feet, we create them ourselves. You can check our Tech Stacks here! What you'll be doing as a Senior Software Engineer in Insider: - Build, scale, and maintain backend and frontend services that power Insider’s core analytics systems, which process hundreds of thousands of events per second, manage terabytes of data, and serve real-time insights across 9+ global products - Maintain and evolve large-scale data stores, ensuring fast, reliable access to analytics data at massive scale - Work on high-throughput, low-latency systems used by both internal teams and customer-facing dashboards - Contribute to event ingestion pipelines, API development, data enrichment, and metric generation flows - Collaborate with backend and data engineers to continuously improve performance, reliability, and observability - Write clean, modular, and testable code using Go and Node.js, focusing on building systems that scale
Senior Fullstack Engineer
Aircall
⚲ Madrid
Wymagania
- TypeScript
- Ruby
- AWS
- React
Senior Fullstack Engineer Aircall is a unicorn, AI-powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer-facing teams. We’re redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace. Our momentum comes from a simple idea: help teams work smarter, not harder. Aircall’s AI Voice Agent automates routine calls, AI Assist streamlines post-call work, and AI Assist Pro delivers real-time guidance so people can do their best work. The result is higher revenue, faster resolutions, and teams that scale with confidence. Aircall is headquartered in Paris, our European HQ, with a strong North American presence anchored in Seattle, our North American HQ, and teams across Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. We’ve built a product customers love and a business that’s scaling quickly, backed by world-class investors and driven by rapid AI innovation across multiple product lines. At Aircall, you’ll join a company in motion. We’re ambitious, product-driven, and execution-focused, with visible impact, fast decisions, and real growth. How we work at Aircall: We’re customer-obsessed, data-driven, and focused on delivering meaningful outcomes. We value ownership, continuous learning, and thoughtful speed. If you thrive in a collaborative, fast-moving environment where trust and impact matter, you’ll feel at home here. We are looking for an engaged and passionate Senior Software Engineer to join our growing Communication Platform department and be part of the Number Management team. You will be responsible for the design, development, deployment, and operation of business-critical features that add customer value. Best practices, evangelization, and mentoring in your team and across the whole of Engineering will be part of your day to day job. Quality, excellence, and agility drive our delivery processes and you will help us level these up. Using Typescript and Ruby back-end stacks, appropriate for each requirement, but always hosted on AWS, we build added value and resilient services on top of voice and Al capabilities, and fully integrated with our customers' business critical tools. Key Responsibilities: * Participate in requirements analysis to help with providing the right technical and business solutions for our customers * Have key responsibilities within the design, architecture, and end-to-end delivery of key modules * Write clean scalable code and test and deploy applications and systems * Review, update, refactor, and debug code * Be part of an engineering organization delivering high quality, secure, voice solutions to Aircall clients * Involvement in product and platform performance optimization and live site monitoring * Participate in an on-call rotation to respond to critical system issues and ensure continuous system reliability * Mentor team members
Senior Fullstack Engineer
Antal
⚲ Kraków, Warszawa
28 560 - 33 600 PLN (B2B)
Wymagania
- Java
- Kubernetes
- Git
- SQL
- Relational database
- REST API
- Microservice architecture
- HTTP (nice to have)
- JavaScript (nice to have)
- React (nice to have)
- DevOps (nice to have)
- Spring Boot (nice to have)
- Spring (nice to have)
O projekcie: 📍 Location: Warsaw or Kraków (hybrid - 2 days in the office per week) 📄 B2B: 170 - 200 PLN / h 🏦 Industry: Financial Services / Payments We are looking for a Senior Fullstack Engineer to join a team working on a large-scale payment platform used in enterprise environments. The platform enables fast, secure, and multi-channel financial operations. The role focuses on building and maintaining backend and frontend services, modernizing legacy systems, and improving automation and efficiency. You will work in an Agile, DevOps-aligned environment with experienced teams. What We Offer: - Work on a long-term, large-scale payment platform. - Real impact on architecture, processes, and modernisation of services. - Hybrid work model (Warsaw or Kraków). - Mature engineering environment with focus on automation and best practices. - Luxmed healthcare package and Multisport card. Wymagania: - Strong experience with Java 11+ (Java 17+ preferred). - Experience with Kubernetes and Git (required). - Fluency in navigating Unix-based systems and command-line interfaces. - Solid knowledge of SQL and relational databases (Oracle preferred). - Practical understanding of REST APIs and microservice architectures. - Knowledge of HTTP/Web technologies, JavaScript and React (preferred). - Experience working in DevOps teams (preferred). - Understanding of application monitoring (desirable). - Knowledge of Spring / Spring Boot (desirable). Codzienne zadania: - Develop and maintain services, microservices, and applications (backend and frontend) using Java 11/17/21 and ReactJS. - Modernize legacy systems, migrating from mainframe and IBM WebSphere to API/microservice-based architectures. - Reduce testing costs by implementing automated testing frameworks. - Improve Straight-Through-Processing (STP) efficiency in services. - Collaborate closely with DevOps and solution delivery teams.
Senior Fullstack .Net Developer
Antal
⚲ Warszawa
20 160 - 28 560 PLN (B2B)
Wymagania
- C#
- .NET Core
- SQL
- RabbitMQ
- Azure Service Bus
- JavaScript
- TypeScript
- HTML
- CSS
- Git
- GitHub
- .NET
- ORM (nice to have)
- NHibernate (nice to have)
- Entity Framework (nice to have)
- React (nice to have)
- UI (nice to have)
- Microsoft Azure (nice to have)
- Kubernetes (nice to have)
- Helm (nice to have)
O projekcie: Senior Full-Stack Developer (.NET + Web) Szukamy doświadczonego Senior Full-Stack Developera, który chce mieć realny wpływ na architekturę, rozwiązania i kierunek rozwoju systemów wspierających kluczowe procesy biznesowe w organizacji z sektora finansowego. Jeśli cenisz dobry kod, przemyślane decyzje techniczne i współpracę z dojrzałym zespołem – ta rola może być dla Ciebie. Oferujemy - Stabilną, długofalową współpracę przy realnych, biznesowo istotnych systemach - Pracę w dojrzałym Agile – nastawionym na ciągłe doskonalenie i empiryczne podejście do rozwoju produktów - Współpracę z doświadczonymi specjalistami i realny wpływ na decyzje technologiczne - Model pracy hybrydowej (minimum 1 spotkanie w biurze co 2 tygodnie) - Współpraca w oparciu o kontrakt B2B Wymagania: - Wykształcenie wyższe informatyczne lub techniczne - Minimum 6 lat komercyjnego doświadczenia w tworzeniu aplikacji w C# (.NET Core / ASP.NET) - Bardzo dobra znajomość relacyjnych baz danych i SQL - Doświadczenie w projektowaniu i budowie systemów rozproszonych - Praktyka w implementacji komunikacji asynchronicznej (np. RabbitMQ, Azure Service Bus) - Doświadczenie w tworzeniu frontendów aplikacji webowych (JavaScript / TypeScript / HTML / CSS) - Swoboda w pracy z Git / GitHub - Umiejętność samodzielnego i kreatywnego rozwiązywania problemów - Znajomość języka angielskiego pozwalająca na pracę z dokumentacją i kontakt z dostawcami Mile widziane - Doświadczenie z ORM (NHibernate, Entity Framework / EF Core) - Znajomość narzędzi do obsługi szyn komunikatów (MassTransit, NServiceBus) - Praca z React - Pisanie testów automatycznych (unit, integration, e2e – także UI) - Doświadczenie z CI/CD i automatyzacją buildów - Praca w Microsoft Azure - Doświadczenie z Dockerem i Kubernetes (w tym Helm) Codzienne zadania: - Rozwój i utrzymanie kluczowych systemów wykorzystywanych w całej organizacji - Projektowanie i implementacja rozwiązań w oparciu o architekturę rozproszoną - Praca w zespole Scrumowym: planowanie, estymacje, proponowanie rozwiązań, demo, iteracyjne usprawnianie produktów - Współtworzenie standardów technicznych i dobrych praktyk (nie tylko kodowanie) - Dzielenie się wiedzą i mentoring mniej doświadczonych developerów
Senior Full Stack Developer
Connectd
⚲ Gliwice
29 000 - 33 000 PLN (B2B)
Wymagania
- React
- TypeScript
- SQL
- Git
- Node.js
- AWS (nice to have)
- AI (nice to have)
- Terraform (nice to have)
- Domain-driven design (nice to have)
- CQRS (nice to have)
O projekcie: Connectd empowers organisations and individuals to transition into and succeed in the future of work - we're building the operating system for fractional working. - we ranked 43rd in Sifted100’s fastest growing start-ups in Europe, growing over 190% CAGR over the last 2 years; #6 in LinkedIn’s top 100 start-ups of 2024, and Barclays’ Scale-up of the Year finalist for 2025 - Grown from $0 to $11m ARR in <4 years, now driving to $50m ARR over next 3 years - Already established in the UK & US - headquartered in London, but with >30% revenue coming from US - also offices in Manchester, Mumbai, Mexico City & Poland Why join us? - equity package in fast-growing startup - flexible paid time off - flat structure with real influence on company operations - fast-paced, delivery focused team Wymagania: Must have skills and experience: - 4+ years of experience building and shipping full-stack web applications. - Proficiency in React and Typescript - Experience designing and working with GraphQL, RESTful APIs and databases (SQL and NoSQL) - Strong understanding of modern frontend development, including TypeScript, React, event-driven architecture and modern tooling - Experience with cloud platforms (we run on AWS) and deployment best practices, including CI/CD pipelines - Strong problem-solving skills and the ability to work autonomously in a fast-paced environment Bonus if you have: - Built agent-based AI features inside Node.js App - Managed cloud environments and deployments using Terraform - worked with Domain-Driven Design and CQRS Codzienne zadania: - Design, develop, and maintain scalable web applications across the full stack - Build and optimize responsive, high-performance user interfaces - Develop and maintain backend services and APIs that power our platform - Collaborate with business stakeholders, product and design to rapidly build, test, and iterate on features within our existing platform - Debug production issues across our systems, ensuring reliability and performance - Advocate for best practices in code quality, testing, and maintainability - Work independently and collaboratively to solve complex technical challenges
Lead Software Fullstack Engineer
Antal
⚲ Kraków
33 600 - 42 000 PLN (B2B)
Wymagania
- Java
- Spring
- Spring Boot
- SQL
- Relational database
- REST API
- Microservice architecture
- Kubernetes
- Git
- Oracle (nice to have)
- JavaScript (nice to have)
- React (nice to have)
O projekcie: 📍 Location: Warsaw or Kraków (hybrid - 2 days in the office per week) 📄 B2B: 200–250 PLN / h 🏦 Industry: Financial Services / Payments We are looking for a Lead Software Engineer (Java) to work on an international payment platform used in a large-scale enterprise environment. The system supports a variety of financial transfers and payment operations across multiple regions. This role combines technical leadership and hands-on development, including mentoring a development team and designing modern software solutions. You will work in an Agile environment with a focus on microservices, API-first architecture, and DevOps practices. What We Offer: - Work on a long-term, international project with high scale and complexity. - Real impact on architecture, standards, and best practices. - Luxmed healthcare package and Multisport card. - Mature engineering environment focused on quality and automation. Wymagania: - Minimum 10 years of professional experience in IT. - At least 3 years experience as a Lead / Tech Lead. - Strong knowledge of Java 11+ (Java 17+ preferred). - Experience with Spring / Spring Boot. - Strong SQL and relational database knowledge (Oracle preferred). - Experience designing REST APIs and microservice architectures. - Experience working in DevOps teams. - Knowledge of JavaScript / React (preferred). - Experience with Kubernetes and Git (required). Codzienne zadania: - Provide technical leadership and mentorship to the development team. - Design, develop, and maintain applications and microservices (backend and frontend). - Work with Java 11/17/21 and frontend technologies such as React. - Modernize existing systems and migrate to API/microservice-based architectures. - Implement and improve automated testing frameworks. - Enhance efficiency and automation of processing workflows (STP). - Collaborate closely with technical teams and business stakeholders.
Lead Developer
Paradox
⚲ Dubai, Lisbon
Wymagania
- React
- TypeScript
- Tailwind
- NestJS
Lead Developer - 🇫🇷 French Fluent Wait a minute. Are you inspired by building a pioneering EdTech company that will empower millions of people? Do you dream of creating cutting-edge web applications that seamlessly combine AI, UX/UI excellence, and scalability to create transformative learning experiences at scale ? Knowing that your code is used by thousands of people means something for you. Are you inspired to work hard, really hard to revolutionize education, innovate with AI, VR, wearables and impact people's lives ? Deep inside you are looking for a new adventure with… - 🗽 Freedom: feeling free to work remotely or hybrid and being trusted to deliver. - 🔥 Ambition: growing up surrounded by smart colleagues driven to create an iconic brand like Nike. - 😍 Impact: contributing to transform people lives at scale and feel your own impact in the company. And you deserve it because… - You don’t just develop. You architect, optimize, groom and push the boundaries of technology. - You had been the CTO or instrumental in a Startup Development. - You’re obsessed with clean, efficient, and scalable code. - You thrive on solving complex challenges and making applications faster, better, and more intuitive. - AI fascinates you, and you see it as a tool to redefine software development and UX/UI user experience. You don’t want to just code… Education and/or personal development inspires you. Then, this is the adventure you’ve been waiting for! You’ll work hard, innovate fearlessly, and grow with us as we strive to make Paradox an iconic brand that changes lives worldwide. For us, being Iconic is to innovate at the intersection of Psychology x Creativity x Technology. You'll work closely with our founding team to define our technical vision. This is a full-time position, carried out from our beautiful offices in Dubai, Lisbon or full-remote from anywhere in the world. French and English fluency is required. YOUR MISSION 🚀 🎯 Your main goal will be to take Paradox’s online learning experience to the next level by building the new Paradox App, a state-of-the-art application that integrates AI, delivers an unparalleled user experience. You will be THE key player in creating an online learning management system that can handle several cohorts of hundreds of students at the same time and scales effortlessly to support thousands of students. Our sources of inspiration are Apple, Nike, Spotify, Disney for their obsession of excelling, having a worldwide impact and not just selling products but crafting experiences. You will be playing a pivotal role in making Paradox play at that level and becoming an iconic brand. To do so, here are your 5 responsibilities : 1 | BUILD & INNOVATE - Develop new features that enhance the Paradox App and redefine how users learn online. - Implement AI-driven functionalities that personalize the learning experience. - Continuously test, iterate, and push boundaries to improve performance and usability. - Collaborate with cross-functional teams to** integrate feedback and rapidly iterate** on new ideas. 2 | SCALABILITY & PERFORMANCE - Ensure the application can handle large volumes of concurrent users while maintaining speed and reliability. - Optimize resource usage and infrastructure costs without sacrificing performance. - Leverage CDN and caching strategies to improve load times globally. 3 | USER CENTERED DESIGN - Work closely with product and design teams to build intuitive, beautiful, and efficient user interfaces. - Rapidly prototype features to test and refine customer experiences. - Incorporate AI and automation to enhance user interactions. 4 | PROBLEM SOLVING & TROUBLESHOOTING - Investigate and resolve technical challenges to ensure a seamless user journey. - Analyze recurring issues and proactively implement solutions to prevent future problems. - Work across teams to ensure a stable and efficient system. 5 | COLLABORATION & COMMUNICATION - Actively participate in tech architecture discussions and planning sessions. - Provide and seek constructive feedback to continually improve the development process. - Work within Agile frameworks to ensure timely and high-quality delivery. DO YOU RECOGNIZE YOURSELF? 😍 It might not be for you 🙅♀️ Let’s be clear, we are looking for someone who is not just Great, and for whom Paradox ambition isn’t just another cool project; but a true mission. So if those personal interests : personal development / coaching / professional growth / education / edtech / teaching / edutainment** are not things you REALLY love, and want to solve for other, let’s forget it Let’s forget about it also if, - You don’t like to be challenged and grow in your job - You don't like receiving or giving tough feedbacks - You don’t question the status quo: the process are there for a reason, we have always done it this way - You like to have very specific & fixed tasks assigned to you. Be told what to do and how to do it. - Your only driver is joining a full-remote company: yes, our company culture is cool, but we want people to care about our mission, products, and their job! But maybe YOU WONDER WHAT’S OUR STORY ? 😉 At Paradox, we are convinced that people do not want “just a job” anymore. We are all craving to have an impact through our professional journey. Some want to start their own venture, some want to become an intrapreneur in their current organization, some others just want their day-to-day tasks to have more meaning. 🎯 PARADOX HAS ONE GOAL: TO EMPOWER PEOPLE AND ORGANIZATIONS TO LIVE THEIR TRUE AMBITIONS. But where do we start? If you have an interest in personal development, you probably already know that: - Making things happen is a real struggle when you don’t know what truly inspires you and how to get there ; - Available resources are either boring 😴 or full of crazy unsubstantiated theories 🤪. It needs to change, and we’re here to make it happen! ⭐️ OUR AMBITION IS TO MAKE SUCCESS THE ONLY POSSIBLE OUTCOME FOR OUR CLIENTS (WHATEVER SUCCESS MEANS FOR THEM), BY CRAFTING INNOVATIVE & CAPTIVATING BREAKTHROUGH EXPERIENCES. In other words, we want to make personal growth as entertaining as watching Netflix. How, you might be wondering? - We travel the world and surround ourselves with top entrepreneurs (Richard Branson - Founder of Virgin, Marc Simoncini - Founder of Meeting, Fred Mazzella - Founder of BlablaCar), world athletes (Tony Parker - Hall of fame NBA Player, Frederick Bousquet - World record in 50m free swimming, Frank Leboeuf - WorldCup Footballer), and artists (Gad Elmaleh - Comedian, Franck Dubosc, Barry Osborne - Producer of Lord of the Rings and Matrix) ✊; - We reverse engineer their strategies for achieving success and fulfillment and lean on the latest researches about neurosciences ⚙️; - We deliver trainings & educational contents around Power Skills (critical thinking, productivity, leadership, public speaking, coaching, stress management, etc.), self-growth and performance, through a balanced set of e-learning programs, events and edutainment videos 💡. From one well-known Founder to a team of +45 people today (and counting!), this approach has paid off and enabled us to exceed 2 million followers on social networks, and to have thousands of people attending our online events and training courses. 🔥 TOGETHER, WE ARE DRIVEN BY ONE DREAM: - Helping 100 000 people achieve their dream and display their pictures on what we call the “100 000 dreams wall” ; - Giving our clients access to constant personal growth by reinventing their learning experience ; - Leverage AI and other technology to provide an outstanding customized experience to millions of people for them to transform their lives. And that’s where you come in. Join the Paradox Revolution !
Lead .NET Full-Stack Engineer (with Angular)
N-iX
⚲ Kraków, Wrocław, Warsaw
25 181 - 28 144 PLN (B2B)
Wymagania
- .NET
- C#
- SQL Server
- HTML
- CSS
- JavaScript
- Git
- Angular
- Microservices
- Jira
- Azure
- GenAi (nice to have)
O projekcie: The Client provides comprehensive operational support and a range of expert services to the world’s leading insurers, brokers, fleet managers and automotive manufacturers. Our 3,300 employees across ten countries deliver exceptional standards on a large scale for over 1,200 clients. We help the global insurance market to handle millions of claims each year in the most cost-effective and efficient ways possible. The Client is embarking on an exciting and challenging transformation program and our software solutions are a driving force behind this strategy using cloud computing and leading-edge design patterns. The Role: This is a great opportunity for an experienced Lead Full Stack Engineer to join our super-motivated Software Development team, being part of one of our existing scrum teams. Each agile team includes technical leadership, development, architecture, quality, product and project management roles. We are looking for a Lead Full Stack Engineer comfortable with C# and Angular, with a proven history of building high-performance apps, including high-traffic, customer-facing platforms. Wymagania: - 7+ years of experience with Microsoft development stack including; .NET C#, SQL Server T-SQL - Important: .Net Core SQL Server, HTML, CSS, Javascript, Git, Angular - Azure, SOLID principles, Microservices architecture, Design principles, Jira - Ideally, you will have experience working with Scrum methodology in a variety of contexts; different team sizes, organizational cultures, distributed development, etc. Nice to have: - Up to 1 year of experience with GenAI - Understanding of performance, scalability, and security requirements in online commerce. Codzienne zadania: - Provide knowledge/helping/mentoring to other team members - Work on business requests and development improvements - Develop, test, document and maintain our application back end build scalable and reusable code - Provide realistic estimates for requests, fixes and new ideas - Write clear and precise technical documentation - Manage realistic work deadlines - Participate in all the scrum ceremonies and be part of the team performance and continuous improvement
Fullstak Engineer
Infolet sp. z o.o.
⚲ Kraków
26 040 - 31 080 PLN (B2B)
Wymagania
- React
O projekcie: - Relocation package (4500 PLN total value), paid in three installments (1500 PLN per month) in case your permanent presence in the office is mandatory, and you need to relocate from another city. - Benefits: Extended medical care (over 2000 medical facilities in Poland, 80 in Kraków) for you and your family; Multisport Benefit card; life insurance Wymagania: Must have - 5+ years of professional experience developing production-grade applications in the .NET ecosystem, including frontend development (preferably React) - Strong proficiency in C#, .NET, and Web API development - Hands-on expertise with React for building dynamic and high-performance web applications - Advanced experience in database design and SQL, particularly SQL Server (T-SQL, query optimization, performance tuning) - Solid experience with DevOps practices, including CI/CD pipelines - Deep understanding of the Software Development Life Cycle (SDLC) - Experience leading UI/UX initiatives or mentoring frontend developers - Familiarity with service management frameworks and ITSM tools - Experience working in enterprise or customer-facing platforms - Knowledge of modern frontend architecture patterns - Strong problem-solving skills and the ability to operate effectively in high-pressure environments - Fluent English and Polish Codzienne zadania: - Participate in software architecture design and technical decision-making - Lead UI changes and UX improvements to enhance application stability and usability - Implement solutions following best practices and design patterns - Analyze business and technical requirements and recommend solution improvements - Create clear and comprehensive technical documentation - Develop application prototypes and proofs of concept to validate designs - Manage changes through the Service Management lifecycle - Actively contribute to the automation and improvement of service management processes - Provide high-quality customer support by resolving issues efficiently - Communicate directly with customers to understand needs and deliver effective solutions
Fullstack Developer (Python, SQL)
Link Group
⚲ Warszawa
27 720 - 30 240 PLN (B2B)
Wymagania
- SQL
- PostgreSQL
- Oracle
- Python
- APIs/Services
- Automated testing
- CI/CD Pipelines
- Azure
- Docker
- Kubernetes
- Angular
- Node.js
- Flask (nice to have)
O projekcie: Join an international engineering team building software that supports day-to-day trading operations. The product helps streamline and automate key workflows around deal entry, lifecycle management and settlement for complex, non-standard contracts. You’ll work closely with both engineers and business users, so your work is visible, practical, and tied to critical operational processes. Wymagania: - Strong experience with SQL databases (e.g., PostgreSQL, Oracle) - Commercial experience with Python and building APIs/services (Flask is a plus) - Practical knowledge of automated testing and CI/CD pipelines - Experience with Azure and cloud-native tooling (Docker, Kubernetes) - Working knowledge of Angular for web UI development - Team player mindset: comfortable in an agile environment, accountable, and collaborative Codzienne zadania: - Deliver new features and improvements that automate Front Office and Back Office workflows (deal capture, monitoring, settlement support) - Build and maintain backend services in Python (Flask or similar) and work with relational databases (PostgreSQL/Oracle) - Improve platform quality and safety through stronger testing, better logging/monitoring, and clear governance/security practices - Contribute to modern delivery and runtime standards: CI/CD, cloud deployments in Azure, containerization with Docker, orchestration with Kubernetes - Help drive reliability and operational excellence, including observability and cost-aware engineering - Take ownership of tasks end-to-end and proactively suggest improvements to existing solutions
Fullstack Developer (.NET + React)
Link Group
⚲ Warszawa, Gdańsk
20 160 - 23 520 PLN (B2B)
Wymagania
- .NET
- C#
- React
- .NET Framework
- .NET Standard
- .NET Core
- React 18+
- Debugging
- DDD
- Clean Code
- SOLID
- T-SQL
- SQL Server Management Studio
- SSMS
- Visual Studio
- Financial sector (nice to have)
- Postman (nice to have)
- Playwright (nice to have)
- WCAG (nice to have)
O projekcie: We’re looking for an experienced Full-Stack Developer to build and evolve business applications using C#/.NET on the backend and React on the frontend. You’ll work closely with a cross-functional team (QA, Analysts, Product Owner) in an Agile/Scrum environment, contributing to both new development and improvements to existing (including legacy) codebases. Wymagania: - 5+ years of experience building applications with .NET / C# - 3+ years of experience building applications with React - Strong knowledge of C# (.NET Framework, .NET Standard, .NET Core/.NET) - React experience with modern versions (React 18+) - Practical skills in debugging, profiling and performance analysis - Understanding of DDD, Clean Code, SOLID - Knowledge of architectural patterns and asynchronous communication - Good command of T-SQL and SQL Server Management Studio (SSMS) - Experience working with Visual Studio Nice to have - Experience building views/UI for mobile applications - Background in projects for the financial sector - Test automation experience (e.g., Postman, Playwright) - Familiarity with WCAG accessibility standards Codzienne zadania: - Develop software in C# based on functional and technical documentation - Build and maintain the frontend using React (18+) - Analyse and improve existing code, including legacy components - Contribute to solution design and architecture - Collaborate daily with developers, testers, analysts and the Product Owner in Scrum
Full-Stack Engineer
The Agile Monkeys
Wymagania
- Java
- Spring Boot
- OpenAI API
About us The Agile Monkeys is a software boutique and a startup studio. We offer AI software consulting services and we build products related to AI and search such as AIFindr.ai. The Role We’re looking for a developer who’s comfortable starting from a blank page and motivated by building practical AI systems end-to-end. You’ll work on solutions that combine real-time processing, voice technologies, and the transformation of unstructured inputs into reliable structured data. This position requires strong system integration skills, solid data engineering foundations, and experience designing evaluation pipelines. If you enjoy tackling challenges across multi-modality (voice and text) and complex data, while creating robust, user-facing AI features, you’ll thrive in this role. Key Responsibilities - Proficiency in Java and Spring boot - Background in AI-powered solutions across voice, text, or unstructured data - Solid foundations in data engineering and data processing architectures - Familiarity with real-time or streaming systems (e.g., audio, WebSockets, event-driven flows) - Experience designing or maintaining evaluation pipelines for AI systems - Comfort working from ambiguous requirements and shaping solutions from scratch - Understanding of security, privacy, and handling sensitive data - Ability to collaborate across product, engineering, and domain teams - Bonus: prior experience with speech technologies (ASR, TTS, telephony)
Full Stack Software Developer (ASP.NET Core / Angular)
KPMG w Polsce
⚲ Katowice
Our Tax Technology team deals with creating and implementing advanced IT solutions that support a wide range of business and tax calculation processes. We are a globally distributed team with members from various locations. We are looking for candidates with passion who would like to join our team in Katowice. In our daily work we are focused on creating safe, innovative, and ergonomic solutions that join specific business knowledge with new technologies. We also support many world-wide corporations which appreciate the highest level of services we deliver. Are you passionate about building modern web applications and delivering high-quality solutions? Join our dynamic team in Katowice as a Full Stack Software Developer! We are looking for a motivated developer with 2+ years of experience in ASP.NET Core, Angular, and cloud-based DevOps practices. Responsibilities: - Design, develop, and maintain scalable web applications using ASP.NET Core and Angular. - Build and consume RESTful APIs and web services. - Collaborate with cross-functional teams to define, design, and ship new features. - Participate in code reviews and contribute to continuous improvement. - Work with Git for version control and follow best practices in branching and merging. - Troubleshoot, debug, and optimize application performance. - Write unit and integration tests to ensure code quality.
Full Stack Developer
Paradox
⚲ Dubai, Lisbon
Wymagania
- React
- TypeScript
- Tailwind
- NestJS
Full Stack Developer - 🇫🇷 French Fluent Are you inspired by building a pioneering EdTech company that will empower millions of people? Do you dream of creating cutting-edge web applications that seamlessly combine AI, UX/UI excellence, and scalability to create transformative learning experiences at scale? Knowing that your code is used by thousands of people means something for you. Are you inspired to work hard, really hard to revolutionize education, innovate with AI, VR, wearables and impact people's lives? You'll work closely with our founding team to define our technical vision. This is a full-time position, carried out from our beautiful offices in Dubai, Lisbon or full-remote from anywhere in the world. French and English fluency is required. YOUR MISSION 🚀 🎯 Your main goal will be to take Paradox’s online learning experience to the next level by building the new Paradox App, a state-of-the-art application that integrates AI, delivers an unparalleled user experience. You will be THE key player in creating an online learning management system that can handle several cohorts of hundreds of students at the same time and scales effortlessly to support thousands of students. Our sources of inspiration are Apple, Nike, Spotify, Disney for their obsession of excelling, having a worldwide impact and not just selling products but crafting experiences. You will be playing a pivotal role in making Paradox play at that level and becoming an iconic brand. To do so, here are your 5 responsibilities : 1 | BUILD & INNOVATE * Develop new features that enhance the Paradox App and redefine how users learn online. * Implement AI-driven functionalities that personalize the learning experience. * Continuously test, iterate, and push boundaries to improve performance and usability. * Collaborate with cross-functional teams to integrate feedback and rapidly iterate on new ideas. 2 | SCALABILITY & PERFORMANCE * Ensure the application can handle large volumes of concurrent users while maintaining speed and reliability. * Optimize resource usage and infrastructure costs without sacrificing performance. * Leverage CDN and caching strategies to improve load times globally. 3 | USER CENTERED DESIGN * Work closely with product and design teams to build intuitive, beautiful, and efficient user interfaces. * Rapidly prototype features to test and refine customer experiences. * Incorporate AI and automation to enhance user interactions. 4 | PROBLEM SOLVING & TROUBLESHOOTING * Investigate and resolve technical challenges to ensure a seamless user journey. * Analyze recurring issues and proactively implement solutions to prevent future problems. * Work across teams to ensure a stable and efficient system. 5 | COLLABORATION & COMMUNICATION * Actively participate in tech architecture discussions and planning sessions. * Provide and seek constructive feedback to continually improve the development process. * Work within Agile frameworks to ensure timely and high-quality delivery. But maybe YOU WONDER WHAT’S OUR STORY ? 😉 At Paradox, we are convinced that people do not want “just a job” anymore. We are all craving to have an impact through our professional journey. Some want to start their own venture, some want to become an intrapreneur in their current organization, some others just want their day-to-day tasks to have more meaning. 🎯 PARADOX HAS ONE GOAL: TO EMPOWER PEOPLE AND ORGANIZATIONS TO LIVE THEIR TRUE AMBITIONS. But where do we start? If you have an interest in personal development, you probably already know that: * Making things happen is a real struggle when you don’t know what truly inspires you and how to get there ; * Available resources are either boring 😴 or full of crazy unsubstantiated theories 🤪. It needs to change, and we’re here to make it happen! ⭐️ OUR AMBITION IS TO MAKE SUCCESS THE ONLY POSSIBLE OUTCOME FOR OUR CLIENTS (WHATEVER SUCCESS MEANS FOR THEM), BY CRAFTING INNOVATIVE & CAPTIVATING BREAKTHROUGH EXPERIENCES. In other words, we want to make personal growth as entertaining as watching Netflix. How, you might be wondering? * We travel the world and surround ourselves with top entrepreneurs (Richard Branson - Founder of Virgin, Marc Simoncini - Founder of Meeting, Fred Mazzella - Founder of BlablaCar), world athletes (Tony Parker - Hall of fame NBA Player, Frederick Bousquet - World record in 50m free swimming, Frank Leboeuf - WorldCup Footballer), and artists (Gad Elmaleh - Comedian, Franck Dubosc, Barry Osborne - Producer of Lord of the Rings and Matrix) ✊; * We reverse engineer their strategies for achieving success and fulfillment and lean on the latest researches about neurosciences ⚙️; * We deliver trainings & educational contents around Power Skills (critical thinking, productivity, leadership, public speaking, coaching, stress management, etc.), self-growth and performance, through a balanced set of e-learning programs, events and edutainment videos 💡. From one well-knownFounder to a team of +45 people today (and counting!), this approach has paid off and enabled us to exceed 2 million followers on social networks, and to have thousands of people attending our online events and training courses. 🔥 TOGETHER, WE ARE DRIVEN BY ONE DREAM: 1. Helping 100 000 people achieve their dream and display their pictures on what we call the “100 000 dreams wall” ; 2. Giving our clients access to constant personal growth by reinventing their learning experience ; 3. Leverage AI and other technology to provide an outstanding customized experience to millions of people for them to transform their lives. And that’s where you come in. Join the Paradox Revolution !