Fullstack Developer (Java + React)

What we offer Work in a Scandinavian culture built on logic, trust, and open dialogue. Health and sports benefits tailored to your needs. Speed Coaching – short sessions designed to provide new perspectives and solutions. Sports training, an internal team, and opportunities to take part in competitions. Areas of responsibility: Developing a new application processing very large volumes of financial data - building features with Java, Spring Boot and React in a fast-growing internal project Implementing business modules for the investment fund market - handling ETF funds, edge cases such as settlement fees, and payment reconciliation processes Working on both new feature development and maintenance of a live production system - incident handling and support for active users, in self-contained tasks that do not require knowledge of the entire architecture upfront What you need to join us: Must have: 5+ years of commercial experience with Java, including building applications with Spring Boot 5+ years of experience working with React Experience with Docker and hands-on knowledge of SQL and working with large databases Experience working in Agile teams English at B2+/C1 level as the main language of daily collaboration, and readiness for hybrid work in Warsaw (1-2 days per week) Eligibility to work in Poland (citizenship, residence card, visa, etc.) Nice to have: Experience in the financial domain - investment funds, ETFs, settlements, reconciliation processes Experience in projects with large data volumes and high performance requirements Experience collaborating with a distributed, international team and business stakeholders Experience combining production system maintenance with new feature development