Senior .NET Developer – C# & Web API

Pauwels Consulting; Sint-Joost-ten-Node; Hybride; EUR 70 000 - 95 000; Plein temps

Résumé du poste

Pauwels Consulting in Brussels is seeking a Senior .NET Developer to design, develop, and maintain robust software solutions, providing technical mentorship to the team and delivering high-quality code.

You will work in a hybrid setup for 4 months starting 14/09/2026, with a full-time contract open to permanent staff and freelancers.

Qualifications

• 8+ years of backend development experience with C#, .NET Core, and .NET Framework.
• 3+ years of experience with ASP.NET Web API, MVC, and REST APIs including Swagger/OpenAPI.
• 3+ years of experience with Entity Framework Core and SQL Server.
• Experience with authentication/authorization protocols such as JWT, OIDC, and claims-based identity.
• Strong background in Unit Testing and Integration Testing.
• Structured, solution-oriented mindset with ability to lead technically.
• Fluent in Dutch or French with a very good level of English.

Responsabilités

• Design scalable and maintainable software solutions with the architecture team.
• Develop software components using .NET Framework and .NET Core.
• Provide technical coaching and mentorship to team members.
• Conduct code reviews and ensure adherence to best practices.
• Analyze requirements and translate them into technical solutions.
• Optimize system performance while ensuring security and maintainability.
• Evaluate and integrate new technologies aligned with objectives.

Connaissances

C#

NET Core

NET Framework

ASP.NET Web API

MVC

REST APIs

Swagger/OpenAPI

Entity Framework Core

SQL Server

JWT

OIDC

Unit Testing

Integration Testing

Technical leadership

Dutch or French + English

Description du poste

Our client, a prominent organization in the public health sector, is looking for a Senior .NET Developer to design, develop, and maintain robust software solutions. The role involves delivering high-quality code and providing technical mentorship to the development team to foster a culture of excellence.

• Develop software components using .NET Framework and .NET Core.
• Design scalable and maintainable solutions in collaboration with the architecture team.
• Provide technical coaching and mentorship to team members.
• Conduct code reviews and ensure adherence to development best practices.
• Analyze functional requirements and translate them into technical solutions.
• Optimize system performance while ensuring security and maintainability.
• Evaluate and integrate new technologies that align with organizational objectives.

• 8+ years of backend development experience using C#, .NET Core, and .NET Framework.
• 3+ years of experience with ASP.NET Web API, MVC, and REST APIs including Swagger/OpenAPI.
• 3+ years of experience with Entity Framework Core and SQL Server.
• You possess experience with Authentication/Authorization protocols such as JWT, OIDC, and claims-based identity.
• You have a strong background in Unit Testing and Integration Testing.
• You bring a structured, solution-oriented mindset and the ability to lead technically.
• You are fluent in Dutch or French with a very good level of English.

Nice to Haves

• Experience with Blazor.
• Proactive approach to evaluating emerging technologies.

• Start date: 14/09/2026
• Duration: 4 months
• Work regime: Full-time
• Location: Brussels
• Working model: Hybrid
• Contract: open to both permanent employees and freelancers