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.
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