3 senior net developer jobs found

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...

Senior C# Engineer - .NET 9/10, AWS Lambda, SQS, SNS - OUTSIDE IR35 £700-£800 per day Outside IR35 - 100% Remote 11-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 Back End engineering, distributed system design, and high-quality serverless delivery, plus the chance to adopt modern AI-assisted development practices as part of your workflow. What You'll Bring: Senior/Staff-level Back End mastery in C# and .NET 9/10 , with the ability...

Principal Software Engineer – Testing Architecture & Engineering Quality 📍 London (1 day/week) | 💰 £750/day Outside IR35 (Flexible) | 📅 12-Month Initial Contract Shape the Future of Engineering Quality at a Leading Investment Bank   A leading investment bank is looking for an exceptional Principal Software Engineer to define and build the future testing architecture across its strategic Global Markets Front Office trading platform.   This is a highly technical Principal Software Engineering position - not a QA, Test Analyst or traditional SDET role.   The successful candidate will join a team with an exceptionally high technical bar. We're looking for someone who thinks like an architect, writes production-quality code, and enjoys solving complex engineering problems through frameworks, tooling and platform design rather than feature development alone.   You'll define the engineering foundations that...