I will do csharp net backend development with rest API and entity framework


Level 2
About this gig
Robust C# / .NET backends & APIs, built to last
7+ years with C# I build clean, scalable backends and REST APIs other developers actually enjoy working with.
What I build:
- REST APIs with ASP.NET Core (Web API)
- Business logic, authentication (JWT), role-based access
- Data layer with Entity Framework Core PostgreSQL, MSSQL, SQLite
- Integration with external services & third-party APIs
- Clean architecture, DTOs, validation, error handling
You get: well-structured, documented code, Swagger/OpenAPI docs, and a backend that's easy to extend not a black box.
New API from scratch, new endpoints on an existing app, or fixing a messy backend all covered.
I can containerize & deploy it (Docker), so you go from code to running service.
Tell me what your backend needs to do and I'll propose the cleanest way to build it.
Get to know Martin Obrecht
Software Engineer
Level 2
- FromGermany
- Member sinceJul 2021
- Avg. response time1 hour
- Last delivery1 day
Languages
English, German
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FAQ
Can you work with my existing .NET codebase?
Absolutely. I can extend, refactor or debug an existing ASP.NET Core / .NET project, not just build from scratch.
Which databases do you support?
PostgreSQL, MSSQL and SQLite via Entity Framework Core. I can also design the schema for you.
Do you provide API documentation?
Yes — Swagger/OpenAPI docs plus a short README on how to run and extend the project

