Senior Full Stack Developer (Java/Angular)

XTB is a global company from the financial industry, focusing on online trading of financial instruments. We are the largest FinTech in Poland and a leader in Central and Eastern Europe, and the range of our operations covers several countries, including Asia and South America. At XTB, we focus on the development of our employees, giving them opportunities to gain knowledge and skills in various fields, as well as offering a number of training and development programs. If you are looking for challenges and want to gain valuable experience in an international business environment, XTB is the right place for you. We are a certified Great Place to Work company. We are looking for a Senior Full Stack Developer (70% Java – 30% Angular) to join the Customer Care team and help build the ecosystem of applications supporting XTB's client service operations. You will design and develop both backend microservices and user interfaces — from solution design through to production deployment. The main focus is on the backend (Java), with meaningful contribution to the frontend layer (Angular). About the Customer Care team Customer Care is the XTB department whose mission is to support post-onboarding processes for new and existing clients. We work closely with a range of other XTB departments. We design and develop an ecosystem of AI-based solutions — from internal microservices, through integrations with external tools, to our own Chat AI. We build internal AML and anti-fraud systems, as well as Customer Database — the central repository of client data. Each of these solutions translates into higher service quality, greater security, and improved client satisfaction. We work in quarterly cycles based on clearly defined goals and KPIs. Responsibilities: • Working in a Scrum environment, with a strong focus on effective team collaboration. • Development of multiple products, offering the opportunity to build a wide range of functionalities. • High-performance systems - we process massive volumes of data with minimal latency. • A strong emphasis on high availability and scalability, supporting investments made by users all over the world. Technologies: • Backend: Java 21+, Micronaut • Frontend: Angular, TypeScript, RxJS, SCSS • Inter-service communication: gRPC • Asynchronous communication: Kafka, Pulsar, RabbitMQ, Chronicle • Data storage: PostgreSQL, MongoDB, Redis • Infrastructure: Rancher (Kubernetes), deployed across multiple data centers • Production monitoring: Prometheus, Grafana, OpenSearch, OpsGenie • Testing: JUnit, Testcontainers, Jest • Development: IntelliJ IDEA, VS Code/WebStorm, GitHub Copilot, Claude Code, Windsurf • Source code and CI: GitLab, GitLab CI • Task and knowledge management: Jira, Confluence, Google Workspace (Gmail, Drive, Docs, Meet, Chat) • Internally developed GenAI tools available to all employees. Requirements: • Strong experience in building Java-based microservices - hands-on expertise in designing, implementing, and evolving microservices, with an understanding of scalability and performance challenges. • Commercial experience with the Angular framework and solid knowledge of RxJS, TypeScript, HTML5, CSS3/SCSS. • Ability to deliver according to requirements - translating business analysis into concrete technical solutions while ensuring compliance with requirements and deadlines. • Ownership and proactivity - taking responsibility for assigned tasks, identifying risks, and proposing solutions to ensure successful project delivery. • Commitment to code quality - adhering to the highest engineering standards, focusing on clean, testable code and alignment with best practices and system architecture. • Active contribution to project development - engaging in continuous improvement and optimization, proposing innovative solutions, and collaborating closely with the team toward shared goals. • Experience in effective communication and collaboration with an experienced team - you are comfortable working with professionals with strong expertise, building productive working relationships, and aligning on goals and decisions within a mature team environment. What we offer: • Real impact on the development of the company and the product. • Work in an experienced team that actively shares knowledge. • A clear growth path supported by regular feedback and transparent career development. • Training budget for courses and conferences of your choice. • An additional day off on your birthday. • An additional day off for parents. • Equipment tailored to your needs. • Private medical care and group insurance. • Access to an e-learning platform for learning English and a benefits platform. • Access to a wellbeing platform, including workshops and private therapy sessions. • Remote work, work from our Warsaw office, or from a coworking space in your city. • Regular team integration events.