We’re looking for an experienced .NET Developer (freelancer) to join a leading telecommunications and digital services company in Brussels. You’ll play a key role in building and enhancing enterprise-grade applications and APIs that power critical business operations and digital transformation initiatives.

Logistics

• Position: Freelance .NET Developer
• Duration: 12-month contract (with potential extension)
• Day Rate: Competitive
• Location: Brussels, Belgium (Hybrid – 2–3 days onsite)
• Start Date: Mid-November 2025

Core Responsibilities

• Design, develop, and maintain .NET-based applications, APIs, and backend services.
• Collaborate closely with solution architects and product teams to translate business requirements into technical solutions.
• Implement best practices in software design, performance, and security.
• Integrate applications with cloud services and enterprise systems.
• Write clean, maintainable, and testable code following modern engineering standards.
• Participate in code reviews, CI/CD processes, and Agile ceremonies.
• Diagnose and resolve technical issues across development and production environments.

Essential Skills & Experience

• Proven experience as a .NET Developer, Software Engineer, or similar.
• Strong command of C#, ASP.NET Core, and Entity Framework Core.
• Hands-on experience with RESTful API development and microservices architectures.
• Familiarity with Azure Cloud Services (App Services, Functions, DevOps Pipelines, etc.).
• Solid understanding of SQL Server or Azure SQL databases.
• Experience working in Agile/Scrum environments.
• Strong analytical skills and a proactive problem-solving mindset.

Nice to Have

• Exposure to Blazor, Angular, or React for front-end integration.
• Knowledge of Docker, Kubernetes, or other containerisation tools.
• Familiarity with CI/CD automation and infrastructure as code.
• Experience integrating authentication and authorisation (e.g., OAuth2, Azure AD).

Why Join?

Join a major digital transformation program where you’ll help modernise enterprise systems using the latest in .NET and cloud technologies. You’ll collaborate with skilled engineers and architects to build reliable, high-performing applications that power a leading telecom’s next generation of digital services.