Backend Developer (.Net Core) - Navigation team - Freelance (W/M/X)

5+ years of experience in backend software development.

Strong hands-on experience with C# and .NET.

Solid experience building and maintaining APIs, asynchronous processing, and distributed backend systems.

Strong skills in monitoring, operational support, incident management, observability, and A/B testing are particularly valuable.

Good knowledge of relational and non-relational databases, especially PostgreSQL and Cassandra

Experience designing and troubleshooting integrations with external/internal services over HTTP.

Strong focus on code quality, including unit tests, integration tests, and production readiness.

Comfortable working on systems with concurrency, resiliency, failure handling, and operational constraints.

Fluent in English.

Product-minded, pragmatic, and able to balance technical quality with delivery priorities.