Senior .NET Backend Engineer

The company is looking for a senior, backend-focused .NET engineer based in Poland to join an international client's team. The role centers on developing and maintaining backend services and APIs that support specialized, scientific workflow management systems. The engineer will design reliable data access and persistence solutions, contribute to a secure and maintainable architecture, and collaborate with product, frontend and domain colleagues to turn user needs into technical solutions. Quality is supported through testing, code reviews, troubleshooting and continuous improvement, along with delivery and deployment work in the Azure ecosystem.