Rhox

Développeur Backend .Net Medior

Closes on 30/09/2026
Brussels
Hybrid, 60% on site
Starts on 01/10/2026
Remuneration: 2.750 - 3.250 EUR/mo gross+ extralegal advantages ·Freelance also possible

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We're looking for a mid-level .NET backend developer to maintain business applications and build REST services with .NET Framework and .NET 8+, alongside ASP.NET interfaces and SQL databases.

What you'll do

  • Build REST services with .NET Framework and .NET 8+.
  • Maintain ASP.NET WebForms/MVC applications on .NET 4.5+.
  • Diagnose incidents and resolve application defects.
  • Write and run unit tests for maintainable, performant code.
  • Collaborate with analysts and architects in Scrum sprints.

What you bring

  • .NET Core, Entity Framework Core, XML, JSON and RESTful APIs.
  • SQL Server (2016 to 2025) and Oracle 19.
  • Azure DevOps, Git, TFVC, Visual Studio and WCF.
  • SOLID, object-oriented design, design patterns, Agile/Scrum and UML/BPMN.
  • French (native), Dutch (B1) and English (B1).

Nice to have

  • SOAP APIs and practical experience with Redgate tools.

What's next?

The people who do well here are the ones who saw themselves in this description. Not because they match every line, but because the mission felt right for them.

We are actively hiring for this position. Applications are reviewed by our team, and matching profiles receive a call to discuss the role in detail.

It takes under a minute to apply. Your email, your CV. That is all we need to start the conversation.