Senior C# Developer Remote-first | Optional office space in London Full-time | Permanent About the Role We're looking for a Senior C# Developer to join a small, collaborative, and mission-driven team building a new platform in the sustainable supply chain space. This is an exciting opportunity to get involved at the ground level of a greenfield project that’s aiming to make a real-world impact — tackling challenges like deforestation and illicit trade through innovative technology. As part of a distributed team across Europe, you’ll play a key role in designing and developing a scalable, secure system from the ground up. You won’t just be handed tickets — you’ll have the autonomy to help shape the product and the way we build it. What you’ll do Lead backend development using modern C#/.NET Build and maintain performant, scalable, and maintainable services Design and implement REST APIs Contribute to architecture, tooling, and best practices Collaborate closely with a small, supportive team that values curiosity, kindness, and ownership What we’re looking for ✅ Strong experience with back-end development in C# ✅ A solid understanding of building APIs and service-based architectures ✅ A passion for clean, maintainable, and efficient code ✅ A collaborative mindset and willingness to get involved in product discussions Nice to have ➕ Experience with PostgreSQL or similar relational databases ➕ Exposure to DevOps practices and AWS or other cloud platforms