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 Senior .NET Developer in our consulting engineering team, you will design and deliver business applications for public-sector clients across Europe. You will own technical decisions on your projects, write and review code in C# and .NET 8, and work on SQL Server-backed systems that public institutions rely on every day. You will work closely with client stakeholders and help the less experienced developers in the team grow.

What you will do

• Design, build and maintain business applications with C#, .NET 8 and ASP.NET Core

• Design data models and write efficient queries and stored procedures in SQL Server

• Turn client requirements into clear technical solutions and realistic estimates

• Lead code reviews and set good practices for testing, security and code quality

• Mentor mid-level and junior developers in the team

• Work with client stakeholders, project leads and QA to deliver on time

• Improve the performance, stability and maintainability of existing applications

What you bring

• 6+ years of professional experience with C# and .NET, including recent work with .NET 6 or newer

• Strong experience with ASP.NET Core, Web APIs and Entity Framework Core

• Strong SQL Server skills: schema design, query tuning and stored procedures

• Good understanding of clean architecture, design patterns and automated testing

• Experience with Git and CI/CD pipelines such as Azure DevOps or GitHub Actions

• You work well remotely: you communicate clearly, take ownership and keep stakeholders informed

Nice to have

• Previous projects for public-sector clients or EU institutions

• Experience with Azure cloud services

• Front-end experience with Angular or Blazor

• Docker and containerised deployments

• Curiosity about AI and LLM-based tools in software development

Skills we're looking for

Technical skills

• C#
• .NET
• ASP.NET Core
• Microsoft SQL Server
• Software Development

Interpersonal skills

• Stakeholder Management
• Mentoring
• Cross-Functional Collaboration
• Decision Making
• Accountability