Kotlin Backend Developer – Fintech Microservices

Sii Poland is hiring a senior backend engineer to design, build, and maintain Kotlin-based microservices within a fintech platform for expense management. You will collaborate with cross-functional teams across Platform, Services, SMB, and other domains to deliver scalable solutions.

Ideal candidates have 3+ years in software development, Kotlin in commercial projects, and experience with backend systems, cloud environments, PostgreSQL, and observability tools.