£700 - £800 per day
Outside Spy
Remote (United Kingdom)
Senior C# Developer – .NET 9/10, AWS Lambda, SQS, SNS – OUTSIDE IR35
£700–£800 per day • Outside IR35 ● 100% Remote • 9 month rolling contract
Takeaway:
Contribute to the architecture and build of a major greenfield B2B SaaS platform as a deeply senior, hands‑on C# engineer, with heavy emphasis on deep .NET engineering , high‑performance distributed systems , and real‑world AWS serverless delivery . You’ll also have the opportunity to develop hands‑on skills with Claude Code , one of the most advanced AI‑assisted development tools in the industry.
Role Overview:
You’ll operate as the technical spearhead for a greenfield product build, reporting to the Director of Engineering. Expect deep backend engineering, distributed system design, and high‑quality serverless delivery, plus the chance to adopt modern AI‑assisted development practices as part of your...