We are looking for a highly skilled Senior C# ASP.NET Core Developer to join our client’s team on a long‑term freelance basis. The role focuses on building high‑performance, scalable applications in the payroll and temporary work sector, leveraging modern .NET technologies, PostgreSQL, and unit testing best practices. The ideal candidate is self‑sufficient, analytical, and fluent in French.

We are seeking a highly skilled Senior Developer with expertise in C# and ASP.NET Core 8 to join our client team. This role will involve developing and optimizing applications, with a focus on performance and scalability in the Temporary Work and Payroll industry.

Nous recherchons un développeur senior expérimenté spécialisé en C# et ASP.NET Core 8 pour rejoindre l'équipe de notre client. Le poste, à distance, implique la conception, le développement et l'optimisation d'applications performantes dans le secteur des missions temporaires et de la paie. Le candidat doit maîtriser les concepts avancés de C#, Entity Framework Core, PostgreSQL, ainsi que les tests unitaires avec xUnit et Moq. Il sera responsable de la mise en place d'une architecture évolutive, de l'optimisation des requêtes SQL et de la traduction de règles métier complexes. La connaissance du domaine de la paie est un atout. Le poste requiert une forte autonomie, une excellente logique et la maîtrise du français.

We are looking for a highly skilled Senior C# ASP.NET Core 8 developer to join our client team. The role focuses on building high-performance, scalable applications in the temporary work and payroll sector. Responsibilities include mastering advanced C# concepts, optimizing Entity Framework Core queries, designing PostgreSQL data models, implementing unit tests with xUnit and Moq, and contributing to scalable architecture. Candidates should be self‑sufficient, analytical, and possess strong knowledge of the payroll industry. French language skills are required. The position is remote and offers a long‑term freelance contract.