AISB-741 Senior Developer .Net

Brussels, Belgium

About the Role

We are looking for a Senior .NET Full-Stack Developer to contribute to the design, development and maintenance of robust software solutions built on Microsoft technologies. In this role, you will use your technical expertise to ensure code quality, solution sustainability and system performance. You will also act as a technical mentor within the team, helping to maintain a high standard of engineering excellence.

You will be part of ICT and Data projects that have a meaningful impact on society, within an environment that values expertise, collaboration and work–life balance.

Responsibilities

  • Develop software components using .NET (Framework and .NET Core)
  • Design scalable and maintainable technical solutions with the architecture team
  • Provide technical guidance and mentoring to team members
  • Conduct code reviews and ensure adherence to best development practices
  • Collaborate with analysts to translate functional requirements into solid technical solutions
  • Guarantee the quality, performance, security and maintainability of applications
  • Participate in system performance optimization
  • Evaluate and integrate new technologies that support business objectives

Required Technical Skills

  • Confirmed Full-Stack development experience
  • C# / .NET (Core, .NET 10)
  • ASP.NET Core Web API
  • Blazor
  • MVC Framework
  • Entity Framework Core
  • REST APIs, Swagger/OpenAPI
  • Authentication & Authorization (JWT, OIDC, claims-based security)
  • SQL Server
  • Unit and integration testing

Behavioural Competencies

  • Strong critical thinking and information analysis skills
  • Structured and solution-oriented mindset
  • Ability to generate viable alternatives and draw sound conclusions
  • Technical leadership and strong collaboration skills
  • Resilience and adaptability in evolving technical environments

Language Requirements

  • Dutch: active knowledge
  • French: active knowledge
  • English: passive knowledge