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

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Martin Obrecht

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

Martin Obrecht

Software Engineer

4.8(96)

Level 2

  • FromGermany
  • Member sinceJul 2021
  • Avg. response time1 hour
  • Last delivery1 day
  • Languages

    English, German
Hi, I'm Martin - a Software Engineer and Computer Science graduate from the Karlsruhe Institute of Technology (KIT), Germany, with 7+ years of hands-on development experience. I build backends, desktop apps and full-stack web tools in C#/.NET, Java/Spring Boot, Python and React/TypeScript - plus web scraping, automation and AI/LLM integration. Whether you need a custom business app, a data scraper or a process automated, I deliver clean, reliable, well-documented software and clear communication from start to finish. Let's build something that actually works for you.

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