Senior C#.NET Blazor Developer

Our client, a leading organization in the transport sector, is seeking a Senior Developer to join a project team responsible for implementing a new planning management system. The role focuses on engineering high-quality digital solutions to improve operational efficiency and passenger services within a modern mobility landscape.

• Develop robust REST APIs using .NET Core Web API and implement complex business logic.
• Design and optimize SQL Server database schemas while performing CRUD operations and performance tuning.
• Build responsive and user-friendly front-end interfaces utilizing Blazor and modern JavaScript frameworks.
• Integrate third-party services and manage application workflows and client-side state.
• Implement secure coding practices including OAuth and JWT for authentication and authorization.
• Participate in Agile ceremonies and maintain high code quality through SOLID principles and unit testing.
• Manage application deployment and automation using CI/CD pipelines via Azure DevOps or GitHub Actions.

• You have 8+ years of development experience within Microsoft technologies.
• You possess 5+ years of experience in backend development with C#.
• You bring 5+ years of hands-on experience with MS SQL Server relational databases.
• You have 3+ years of development experience with Blazor.
• You possess experience with Microsoft Azure cloud platforms and DevOps tools including Azure DevOps or GitHub Actions.
• You're proficient in building REST APIs with .NET Core Web API.
• You have experience with architecture and design patterns including CQRS, Repository, Unit of Work, and SOLID principles.
• You bring experience in testing with xUnit, NUnit, or MSTest.
• You're proactive and possess a solution-oriented attitude.
• You are fluent in French or Dutch with professional knowledge of English.

Nice to Haves

• Experience with JavaScript frameworks for front-end development.
• Proficiency with Visual Studio 2022.
• Knowledge of GIT tools and philosophies.

• Start date: 01/07/2026
• Duration: 2 years
• Work regime: Full-time
• Location: Brussels
• Working model: Hybrid (2 days onsite)
• Contract: open to both permanent employees and freelancers