Mid-Senior Backend Developer (C#/.NET)

We are looking for a Mid-Senior Backend Developer (C#/.NET) to join a long-term project for a German client. You'll work on a production ASP.NET Core system, owning backend features end-to-end and collaborating directly with the client's engineering team.

What you'll do:

- Design, build and maintain backend services in C# / ASP.NET Core

- Work with SQL Server (or PostgreSQL) for data storage and query optimization

- Design and implement REST APIs consumed by web and mobile frontends

- Write unit and integration tests, participate in code reviews

- Collaborate with frontend developers (Angular/Vue) on API contracts

- Participate in architecture discussions and technical decision-making

Requirements:

- 4+ years of commercial experience with C# / .NET (.NET 6+/ASP.NET Core)

- Strong SQL skills (SQL Server or PostgreSQL)

- Experience designing and consuming REST APIs

- Familiarity with Entity Framework Core or a similar ORM

- Understanding of clean architecture / SOLID principles

- English level C1, comfortable in daily communication with a German client

Nice to have:

- Experience with Angular or Vue on the frontend side

- Experience with Docker and CI/CD pipelines

- Experience with Azure or AWS

We offer:

- Competitive salary depending on experience

- Long-term project with a stable international client

- Flexible remote work, minimal bureaucracy

- Direct communication with the client's tech team, no unnecessary layers