Senior .NET Backend Developer
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NET Backend Developer | Brussels | Hybrid We are looking for an experienced Senior .
NET Backend Developer to join a core business applications development team in Brussels. 📍
Location:
Brussels – Avenue de l'Astronomie
Work model: Hybrid – 3 days/week onsite required 📅 Duration: 01/10/2026 – 31/12/2026 ⏱️ Contract: Full-time | 3 months 🇫
Language: French – Native/C2 🇬🇧 English & 🇳🇱 Dutch: Passive knowledge/B1 or B2 Required Technical Experience .
NET / C# – Expert: 10 years .
NET Core – Expert: 5 years Entity Framework Core – Expert: 10 years Azure DevOps – Expert: 10 years JSON – Expert: 10 years RESTful APIs – Expert: 10 years SOLID principles – Expert: 10 years Agile / Scrum – Expert: 10 years ASP.
NET – Confirmed: 5 years ASP.
NET MVC – Confirmed: 5 years Git – Expert: 10 years Visual Studio – Expert: 10 years XML – Expert: 10 years UML – Nice to have SOAP API / WCF – Nice to have
Key Responsibilities
Develop and maintain backend applications using .
NET Framework and .
NET 8+ Design and develop REST APIs / Web APIs Work with SQL Server and Oracle databases Develop using Entity Framework Core Analyse functional requirements and translate them into technical solutions Apply SOLID principles, design patterns and clean coding practices Write and execute unit tests Perform corrective and evolutionary maintenance Troubleshoot technical incidents and optimize application performance Participate in code reviews and Agile/Scrum activities Work closely with analysts, architects and development teams Ideal Candidate We are particularly interested in candidates who have strong hands-on experience with modern .
NET, EF Core, REST APIs, Azure DevOps and SQL Server, while also being comfortable working with existing ASP.
NET/MVC/.
NET Framework applications. French is mandatory, and candidates must be able to work 3 days per week onsite in Brussels. 📩 Interested? Please share your updated CV and availability. Candidates should also be prepared to confirm their onsite availability and demonstrate their practical Entity Framework Core experience. #DotNet #NETDeveloper #CSharp #BackendDeveloper #SeniorDeveloper #DotNetCore #NET8 #EntityFrameworkCore #EFCore #ASPNet #ASPNETMVC #AzureDevOps #Git #RESTAPI #WebAPI #SQLServer #Oracle #Agile #Scrum #SOLID #Brussels #Belgium #ITJobs #TechJobs #Hiring
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