Senior Software Engineer (Java)

Salary: 1100-1400 pln/md Work model: Hybrid from Gdynia/Gdańsk (once per week from the office)   Why choose this offer? • End‑to‑end ownership with a modern tech stack • Stability combined with continuous growth • Autonomy and high‑quality collaboration   Project We are looking for a Java Backend Developer with a pragmatic, end-to-end mindset - someone who is not afraid to step into frontend territory when needed and treats AI-assisted coding as a natural part of their workflow. You will be working on complex financial instruments and calculations in a fintech environment, building and maintaining backend services while contributing to full product delivery when required.   Responsibilities you'll have   • Design, develop, and maintain robust backend services and APIs in Java • Deliver end-to-end features independently - from backend logic to frontend implementation (e.g. generating monthly cash statements, reports, financial calculations) • Work with frontend layers (Angular or other frameworks) at a functional level - not as a specialist, but as someone who can get things done • Integrate backend systems with frontend and third-party services • Participate in code reviews, maintain code quality standards • Support CI/CD pipelines and production releases • Leverage AI coding tools (agentic coding, vibe coding) as an active part of daily workflow   Expected competences and knowledge   • 10+ years of experience in backend/full-stack development • Strong Java experience (core requirement) • Experience building REST APIs, microservices, HTTP-based integrations • Basic exposure to frontend frameworks (Angular, React, or other) - ability to implement and modify frontend features, not expert-level • Solid SQL / NoSQL (PostgreSQL, MongoDB, Redis) • Knowledge of CI/CD pipelines and deployment processes • Active use of AI coding tools (Copilot, Cursor, or similar)  • Experience in fintech or financial domain (complex financial instruments, calculations, reporting)   Technologies you'll work with • Java • REST APIs / HTTP • Microservices architecture • SQL • NoSQL • PostgreSQL • MongoDB • Redis • Frontend frameworks • CI/CD • AI coding tools   Client – why choose this particular client from the Jit portfolio? Our client is an international financial services organization operating in the capital markets domain, focused on processing and analyzing large volumes of transactional data. The company develops modern data platforms that support trading, operational efficiency, and regulatory reporting. It operates in a fast-paced, highly regulated environment with a strong emphasis on scalability, data quality, and advanced analytics.   About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.