Senior .NET Developer – Mobility & Resource Management Solutions

Our client, a leading organization in the mobility sector, is seeking a Senior Developer to engineer a complex competence management system. The role involves the full-stack implementation of digital solutions, focusing on backend logic, cloud integration, and modern user interfaces to improve operational efficiency.

• Develop APIs and implement business logic and application workflows.
• Design SQL Server database schemas and perform performance tuning.
• Build responsive, user-friendly interfaces using Blazor and modern JavaScript frameworks.
• Integrate external third-party services and manage secure authentication via JWT or OAuth.
• Manage deployment processes using Azure DevOps and GitHub Actions for Microsoft Azure.
• Ensure code quality by writing comprehensive unit tests using xUnit, NUnit, or MSTest.
• Participate in Agile ceremonies and collaborate with cross-functional project members.

• 8+ years of experience in backend development with C# and .NET.
• 5+ years of expertise in MS SQL Server (version 2022+) and database schema design.
• 5+ years of experience building and consuming Microsoft .NET Core Web API.
• You bring proficiency in version control with GIT and applying SOLID design principles.
• You possess knowledge of architectural patterns such as CQRS, Repository, Unit of Work, and Singleton.
• You have experience building interfaces with Blazor and JavaScript frameworks.
• You possess skills in cloud infrastructure utilizing Microsoft Azure, Azure DevOps, and GitHub Actions.
• You're experienced in testing frameworks including xUnit, NUnit, or MSTest.
• Analytical thinker with a pragmatic, hands-on approach and strong communication skills.
• You are fluent in French with professional knowledge of Dutch or English.

Nice to Haves

• Experience with development tools like Visual Studio 2022 and Visual Studio Code.
• Familiarity with the use of AI tools to enhance development workflows.

• Start date: 01/06/2026
• Duration: Until 31/05/2028
• Work regime: Full-time
• Location: Brussels
• Working model: Hybrid (2 days onsite per week)
• Contract: open to both permanent employees and freelancers