### **Senior .NET Full-Stack Developer** We are looking for an experienced **Senior .NET Full-Stack Developer** to design, develop, and maintain high-quality software solutions built on Microsoft technologies. You will play a key technical leadership role, ensuring code quality, application performance, and long-term maintainability while mentoring other developers and collaborating closely with architects and business analysts. #### **Key Responsibilities** - Design, develop, and maintain applications using **.NET Framework** and **.NET Core/.NET 10**. - Build scalable, secure, and maintainable software solutions in collaboration with the architecture team. - Lead technical discussions and mentor junior developers. - Conduct code reviews and promote development best practices. - Translate business and functional requirements into technical solutions. - Ensure application quality, performance, security, and reliability. - Optimize system performance and troubleshoot complex technical issues. - Evaluate and integrate new technologies aligned with business objectives. #### **Required Skills & Experience** - Expert-level experience with: - C# / .NET (Core, .NET 10) - ASP.NET Web API - Entity Framework Core - ASP.NET MVC - Strong knowledge of: - REST APIs - Swagger/OpenAPI - SQL Server - Unit and Integration Testing - Authentication & Authorization (JWT, OIDC, Claims) - Experience with **Blazor** is an advantage. - Strong understanding of software architecture, secure coding practices, and application performance optimization. - Excellent analytical, problem-solving, and technical leadership skills. #### **Languages** - Fluent in **French or Dutch (C2 level)**. - Good command of **English (C1 level)**. #### **Work Arrangement** - Hybrid role with **at least 2 days per week onsite in Brussels**. - Teleworking is permitted **within Belgium**. - Flexible 40-hour workweek with modern working facilities and professional development opportunities.