Senior Node.js Developer

Nasze wymagania: Minimum 3 years of commercial experience with Node.js and Nest.js Strong knowledge of JavaScript (ES6+) Experience working with SQL or NoSQL databases (e.g., MongoDB, MySQL) Practical experience with REST, GraphQL, or WebSockets Understanding of microservices architecture Experience with GIT version control system At least intermediate level of English Mile widziane: Experience with code generation, including non-AI and AI-assisted approaches Azure AI Foundry experience Data Science fundamentals and collaboration with DS teams Strong background in Big Data architectures and Spark ecosystems Familiarity with financial instruments and financial services data Hands-on experience with industry-standard LLMs (including GPT, Claude or similar) Exposure to AI-enabled data platforms and intelligent analytics use cases O projekcie: We are looking for an experienced Senior Node.js Developer to join our team and drive the development of modern web solutions based on a microservices architecture. You will have the opportunity to work on an advanced in-house platform and participate in integrations with external systems. We value proactive individuals who are eager to share knowledge, take ownership of their work, and actively contribute to designing and implementing new features. This is a full-time, on-site position based in our offices in Kraków, Warszawa or Gdańsk. Work schedule: 5 days a week. Zakres obowiązków: Design, develop, and maintain a modern web platform using Node.js and Nest.js Implement new features within a microservices architecture Integrate with external APIs and systems (REST, GraphQL, WebSockets) Optimize application and database performance (SQL/NoSQL) Participate in system architecture design and technology selection Collaborate with developers, testers, and DevOps in an Agile environment Ensure high code quality through TDD and code reviews Troubleshoot technical issues and support error analysis Implement CI/CD solutions and automate development processes Ensure security, scalability, and reliability of delivered solutions Oferujemy: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English language classes Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events