Senior .NET Developer – Xamarin & .NET Core

Our client, a prominent organization in the transport sector, is seeking an expert developer to take ownership of designing and building high-quality software solutions. The role focuses on delivering reliable applications within the transport execution domain while ensuring technical excellence through robust design and collaboration.

• Design and build high-quality, well-tested software solutions within the transport execution domain.
• Translate business ideas into effective, reliable applications in collaboration with stakeholders.
• Develop secure and performant .NET Core Web APIs.
• Lead the development of complex native .NET for Android and Xamarin applications.
• Manage containerized deployments and set up Azure DevOps pipelines with Kubernetes and Docker.
• Ensure code craftsmanship by writing maintainable, SOLID code and automated unit tests.

• 8+ years of experience in .NET development, demonstrating mastery of LINQ, async/await, and security practices.
• 5+ years of experience in cloud development leveraging Azure services, PaaS components, and event-driven patterns.
• 5+ years of experience developing native .NET for Android and Xamarin applications.
• 5+ years of experience building secure and performant .NET Core Web APIs.
• 2+ years of experience with Blazor development.
• Professional expertise in unit testing and test quality.
• Strong knowledge of SQL and relational database design and optimization.
• Practical experience with Git, Azure DevOps, Docker, and Kubernetes.
• You are professional, constructive, and remain calm in stressful situations.
• You are fluent in English with a C2 level.

Nice to Haves

• Willingness to actively contribute to team knowledge sharing and mentorship.

• Start date: 21/12/2026
• Duration: Until 31/10/2028
• Work regime: Full-time
• Location: Brussels
• Working model: Hybrid (with up to 20 onsite days in Brussels as required)
• Contract: open to both permanent employees and freelancers