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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tech Lead .net / C# (F/M) - **Company:** Sonepar - **Location:** Paris, France - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** .NET Framework, Application Programming Interfaces (APIs), Agile Methodology, Software Applications, Architectural Patterns, C Sharp (Programming Language), Software Quality, Code Review, Database Design, Software Debugging, NoSQL, Scrum Methodology, Software Engineering, SQL Databases, Systems Architecture, Solid Principles - **Published:** June 3, 2026 - **Apply:** https://fr.indeed.com/viewjob?jk=f2fe1aecf0fa9fbe ## About the Role Do you have experience in Software development?, * Proven experience (7+ years) as a Software Engineer, with a track record of delivering complex software projects. * Strong proficiency in .net / C#. * Extensive experience with software design principles, architectural patterns, and best practices. * Solid understanding of database design, SQL, and NoSQL databases. * Familiarity with modern software development methodologies (e.g., Agile, Scrum). * Excellent problem-solving and debugging skills. ## Description We are seeking a highly skilled and experienced Staff Software Engineer to join our dynamic team. In this role, you will be responsible for leading the design, development, and implementation of complex software systems and applications. You will work closely with cross-functional teams, mentor junior engineers, and provide technical expertise to drive innovation and excellence in our software development processes. What Success Look Like * Implement the architectural design and technical specifications for software projects, ensuring scalability, maintainability, and performance * Take ownership of the full software development lifecycle, from coding and testing to deployment and maintenance. * Mentor and guide junior engineers, fostering a collaborative and innovative engineering culture within the team. * Collaborate closely with product managers, lead architects, designers, and other cross-functional teams to translate business requirements into technical solutions. * Conduct thorough code reviews to maintain code quality, consistency, and adherence to coding standards. * Tackle complex technical challenges and provide creative solutions to meet project goals and deadlines. * Create and maintain technical documentation, including system architecture diagrams, API documentation, and coding guidelines. * Identify and address performance bottlenecks, ensuring that software applications meet or exceed performance expectations. * Stay up-to-date with industry trends and emerging technologies, and apply this knowledge to improve our software development processes. * Foster a collaborative and inclusive work environment, promoting knowledge sharing and continuous learning among team members. ## Related Videos - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Are Code Reviews Worth It? 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