Senior .NET Developer — Hybrid in Brussels, API & Security

ITProposal; Brussel Hoofdstad; Hybride; EUR 123 000 - 154 000; Plein temps

Résumé du poste

ITProposal in Brussels is seeking an experienced Senior .NET Developer to join a professional development team. You will design, develop and maintain robust, scalable .NET applications within a Microsoft stack, guiding other developers and collaborating with architects and analysts.

This role is hybrid, requiring a minimum of two days per week on-site in Brussels. The position starts September 2026 with a daily rate of €560–€700.

Qualifications

• Strong experience with C# / .NET and .NET Core.
• Experience with ASP.NET Web API, REST APIs, and MVC applications.
• Experience with Entity Framework Core and SQL Server.
• Experience implementing JWT/OIDC/claims authentication and authorization.
• Experience with unit and integration testing.

Responsabilités

• Develop and maintain software components using C# and .NET / .NET Core.
• Design scalable, maintainable and secure software solutions.
• Develop ASP.NET Web APIs, REST APIs and MVC applications.
• Work with Entity Framework Core and SQL Server.
• Implement authentication and authorization using JWT, OIDC and claims.
• Conduct code reviews and ensure adherence to development best practices.
• Write and maintain unit and integration tests.
• Collaborate with architects, analysts and developers in an Agile environment.

Connaissances

C# / .NET

ASP.NET Web API

REST APIs

Swagger/OpenAPI

Entity Framework Core

MVC

SQL Server

Authentication & Authorization (JWT/O…

Unit & Integration Testing

Blazor

Description du poste

ITProposal in Brussels is seeking an experienced Senior .NET Developer to join a professional development team. You will design, develop and maintain robust, scalable .NET applications within a Microsoft stack, guiding other developers and collaborating with architects and analysts.

This role is hybrid, requiring a minimum of two days per week on-site in Brussels. The position starts September 2026 with a daily rate of €560–€700.