We are looking for a senior .NET developer with a strong backend focus and solid frontend knowledge, who enjoys working both on existing (legacy) applications and on the modernization towards future‑proof solutions. You will play a key role in maintaining business‑critical systems and gradually shaping the technical future of our application landscape.
Your responsibilities
- Design, develop and maintain backend‑driven web and API solutions using .NET Core, C#, ASP.NET (Web API / MVC).
- Maintain and modernize existing legacy applications (WPF / WinForms) and contribute to migration strategies towards more modern architectures.
- Translate functional needs into technical solutions and work independently on complex challenges.
- Build and consume REST APIs and ensure secure integration between systems.
- Contribute to frontend development using React and/or Blazor, in collaboration with designers and other developers.
- Ensure code quality through testing, reviews and documentation.
- Act as a senior reference point in the team and mentor less experienced developers.
- Think along about technical direction, architecture and future evolutions.
Your profile
- 7–10 years of experience as a developer in a .NET environment.
- Strong experience with .NET Core, C#, ASP.NET, Entity Framework.
- Experience with React and/or Blazor.
- Familiarity with legacy Microsoft technologies (WPF / WinForms) or a strong willingness to learn and work with them.
- Experience with REST APIs and application security concepts.
- Experience with CI/CD and Git; knowledge of containerization (Docker, OpenShift, Kubernetes) is a plus.
- Interest in cloud technologies (Azure is a plus).
- Strong problem‑solving skills, autonomous working style and sense of ownership.
- Ability to reflect on complex problems and know when to seek alignment.
- Fluent in English; Dutch is a plus.
Our offer
- A comprehensive mobility program that supports work-life balance.
- Continuous learning and professional development opportunities.
- A dynamic, innovative environment with real opportunities for growth.
- A people-centric culture with a strong focus on wellbeing and health initiatives.
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