Senior C# ASP.NET Core Developer – Remote, Long‑Term Contract. Join Novancy’s client team to design, develop, and optimize high‑performance applications in the Temporary Work & Payroll sector. Lead architecture decisions, implement scalable solutions, and ensure code quality through unit testing. Strong expertise in C#, ASP.NET Core 8, Entity Framework Core, PostgreSQL, and modern design patterns is required. French language proficiency is mandatory. Work independently, deliver on schedule, and contribute to a dynamic, remote environment.