Description

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.

Mandatory conformity criteria:

· .NET development: Over 10 years of experience

· Azure Cloud development: Over 5 years of experience

· .NET Core Web API development: Over 5 years of experience

· Native .Net for android (Xamarin) : Over 5 years of experience

· Blazor – At least 1 year of experience

· React Native – At least 1 year of experience

· Professional expertise in unit testing

· Fluent in English (C2)

· 20 days on site at the office in Brussels, to be determined by the customer

Evaluation criteria:

· .NET development – demonstrates deep mastery of the .NET ecosystem: language features, LINQ, async/await, security practices, and selecting appropriate data structures and patterns.

· Android – Working experience developing complex native .NET for android / Xamarin applications. deep mastery of the android lifecycle, native binding.

· Code quality & craftsmanship – writes clean, maintainable, and SOLID code that follows best practices.

· Web API design & development – designs secure, performant .NET Core Web APIs.

· 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 & DevOps practices – sets up robust Azure DevOps pipelines and manages containerized deployments with Kubernetes & Docker.

· SQL & database design – models, queries, and optimizes relational databases.

· Git & version control – applies branching strategies and collaborates efficiently using Git

. Collaboration & communication – explains technical choices clearly, works constructively in a team, and remains professional under pressure.