.NET Developer

Job description About RMT Labs RMT Labs SA is a Luxembourg-based research and technology company building the future of hiring in Europe. We operate two complementary brands: Talent Quanta, a profitable recruitment and ICT-consulting business serving clients across Europe since 2022, and Skillbourg, an AI-powered talent platform born from that real-world recruitment intelligence. About the role As a .NET Developer in our consulting engineering team, you will build and maintain business applications for international clients, working in mixed teams across Luxembourg and Bucharest. You will work with C# and ASP.NET Core on real production systems, alongside senior developers, QA and a project lead, and you will be in direct contact with client stakeholders. What you will do - Build and maintain web applications and REST APIs with C# and ASP.NET Core - Work with SQL Server and Entity Framework Core to design and query data - Write clean, well-tested code and take part in code reviews - Fix bugs and improve the performance of existing applications - Work in agile sprints with colleagues in Luxembourg and Bucharest and with client teams - Document your work so it is easy to maintain and hand over What you bring - 3+ years of professional experience with C# and .NET - Hands-on experience with ASP.NET Core and Web APIs - Good knowledge of SQL Server or another relational database - Experience with Entity Framework Core, Git and unit testing (xUnit or NUnit) - Solid understanding of object-oriented design and clean code principles - You work well remotely: you communicate clearly, plan your own work and ask when something is unclear Nice to have - Experience with Azure or Docker - Front-end experience with Angular, React or Blazor - Previous projects for public-sector, EU institution or banking clients - Curiosity about AI and LLM-based tools in software development Skills we're looking for Technical skills - .NET - C# - ASP.NET Core - Microsoft SQL Server - Entity Framework Interpersonal skills - Stakeholder Management - Cross-Functional Collaboration - Teamwork - Written Communication - Work Autonomy