Senior Back-end Developer C# .NET - Freelance
CafeynParis, Ile-de-France, France
Posted April 30, 2026
Full Time
About the Company
Cafeyn is a leading digital reading service with over 2 million users worldwide.
Job Description
Join Cafeyn, a leading digital reading service with over 2 million users worldwide, as a Senior Back-end Developer C#.NET. Participate in the development of APIs and back-end components, ensure system operation and maintenance, and participate in technical design. Work with a team of over 10 developers in a fast-evolving market.
Requirements
- Strong working knowledge of C# (.Net Core framework)
- SQL experience
- Strong knowledge of REST APIs and/or gRPC
- Experience with development tools, source management and CI/CD
- Experience in performance optimization, unit tests and best practice
- Product vision
- Team play and strong sense of cross collaboration
- Bilingual in French and English
Benefits
- Freelance opportunity
- Opportunity to work with a diverse team and promote inclusivity
