Senior .NET Developer

We are looking for a senior developer who will take ownership of designing and building high-quality, well-tested software solutions within the Transport Execution Management domain. You will work closely with the solution designer and business stakeholders to translate ideas into effective, reliable applications, gaining a deep understanding of the business context along the way.

Beyond strong technical expertise, we are looking for someone who shows initiative, communicates clearly, contributes actively to the team, and is willing to go the extra mile when needed. You are respectful and calm in your interactions. Independence is key in this role: taking full responsibility for delivering complete solutions is part of your daily work. At the same time, you value teamwork and knowledge sharing.

In line with the PROS values of SNCB, you bring professionalism and a constructive attitude that helps the team move forward.

• .NET development: more than 5 years of experience
• Azure Cloud development: more than 3 years of experience.
• .NET Core Web API development:
  Over 3 years of experience
• Experienced in unit testing code
• Demonstrable experience with Clean Code, Clean Architecture and SOLID principles
• Minimum 2 days onsite in Brussels
• You communicate fluently in Dutch or French (spoken and written) at least C2 level.
• You communicate fluently in English (spoken and written) with at least level C1.

Evidence of compliance with the requested skills (evaluation criteria) needs to be provided in the CV.

• .NET development – demonstrates strong mastery of the .NET ecosystem, including language features, LINQ, async/await, security practices, data structures and design patterns.
• Code quality & craftsmanship – writes clean, maintainable and SOLID code that follows proven engineering practices.
• Azure cloud – leverages Azure services, PaaS components, and event-driven patterns effectively.
• Unit testing & test quality – creates meaningful, maintainable and automated unit tests.
• CI/CD & Dev Ops practices – sets up robust Azure Dev Ops pipelines and manages containerized deployments with Kubernetes & Docker.
• API integration & offline/online synchronization – integrates reliably with backend APIs and designs Android applications that can handle offline usage, local persistence, synchronization, conflict handling and recovery when connectivity is restored.
• SQL & database design – models, queries, and optimizes relational databases.
• Git & version control – applies branching strategies and collaborates efficiently using Git.
• Communication – explains technical choices clearly.