Full-Stack Engineer (React + .NET) – Modernize & Build APIs

Symphony Solutions is seeking a Full-Stack Software Engineer (React + .NET) to join our Development Team in Poland. You will work across back-end and front-end, modernizing existing applications and taking ownership of features, with emphasis on clean, maintainable code and pragmatic problem-solving.

Ideal candidates have 3+ years in .NET, strong REST API experience, and solid React + TypeScript skills. You will collaborate with UX, product, QA, and operations to deliver reliable, scalable