Senior .NET Developer

We are looking for a Senior .NET Developer to join a team working on the migration and modernization of essential business applications. You will contribute to the design, development, and maintenance of robust Microsoft-based solutions while providing technical guidance to other team members.

Key Responsibilities

• Develop and maintain software components using C# / .NET Framework and .NET Core.
• Design scalable and maintainable solutions with the architecture team.
• Provide technical mentoring and perform code reviews.
• Translate functional requirements into effective technical solutions.
• Ensure application quality, security, performance, and maintainability.
• Optimize system performance and evaluate new technologies.
• Contribute to development best practices and continuous improvement.

Requirements

• Strong experience with C# / .NET, ASP.NET Web API, Entity Framework Core.
• Experience with REST, Swagger/OpenAPI, SQL Server, MVC, Blazor.
• Knowledge of JWT/OIDC, authentication and authorization.
• Experience with unit and integration testing.
• Strong analytical, structured, and solution-oriented mindset.
• Technical leadership and excellent collaboration skills.
• Adaptable and resilient in changing technical environments.
• French or Dutch: C2 level.
• English: C1 level.

Work Arrangement

• Location: Brussels
• Hybrid: Minimum 2 days per week on-site.
• Remote work is possible within Belgium.