Java Backend Engineer: Fintech for Global Impact

ARQ is seeking a Backend Engineer to design, develop, and maintain scalable, secure backend systems powering our fintech products in Kraków. You will build REST APIs and microservices using Java 25 and PostgreSQL, with Spring Boot driving fast, quality delivery.

Join a team that values maintainable code, TDD, and a pragmatic approach to business logic. This role offers a hands-on opportunity to shape products used by millions while growing with a fast-growing fintech.