> Markdown version of [/jobs/ext/3563483-c-net-developer](https://www.wearedevelopers.com/jobs/ext/3563483-c-net-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # C# /.Net Developer - **Company:** Experis - **Location:** Luton, UK - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Clean Code Principles, .NET Framework, Automation of Tests, Business Software, C Sharp (Programming Language), Continuous Integration, Object-Oriented Software Development, Scrum Methodology, Software Architecture, Systems Development Life Cycle, Software Engineering - **Published:** October 3, 2026 - **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2998873894-2 ## About the Role You'll be working on complex, real-world engineering challenges where performance, reliability and quality are critical. This is not greenfield startup experimentation or routine business applications. It's software that operates in demanding environments where failure isn't an option. You'll join a mature engineering organisation where strong technical practices, clean architecture and high-quality delivery are genuinely valued., We're interested in engineers who enjoy solving difficult technical problems and writing software properly. You'll likely have: * Strong commercial experience with C# and .NET * Experience delivering production software across the full SDLC * A solid understanding of software architecture and design principles * Experience building testable, maintainable code * Knowledge of automated testing and CI/CD practices * Experience working within collaborative Agile teams * The confidence to operate independently and take ownership of delivery Most importantly, you'll care about engineering quality. ## Description 12-Month Contract | Luton (4 Days Onsite, 1 Day Remote) | Inside IR35, As a Senior Software Engineer, you'll take ownership of meaningful technical challenges throughout the software development lifecycle. You'll be: * Designing and building robust applications using C# and .NET * Developing scalable software within complex mission-critical environments * Working closely with systems, software and integration engineers * Contributing to architecture and technical decision-making * Implementing automated testing and quality engineering practices * Supporting software through integration, validation and deployment * Delivering maintainable, secure and high-performance solutions This role offers a high degree of autonomy, trust and technical ownership. The Technology You'll be working within a modern engineering environment that includes: * C# * .NET * Automated Testing * Object-Oriented Design * Agile Delivery (Scrum / Kanban) * Windows-Based Systems