About this role
Salary: £65,000 - 75,000 per year
Requirements: Excellent hands-on development experience with modern C# and .NETMeaningful commercial experience with WinFormsCommercial test-driven development experience, using a test-first Red/Green/Refactor approachStrong automated testing experienceExperience contributing to technical decisions and software designExperience owning and modernising existing applicationsHighly desirable: experience migrating WinForms applications to modern .NETHighly desirable: exposure to Clean ArchitectureHighly desirable: experience with API design and service-based architectureHighly desirable: React or JavaScript exposureHighly desirable: AI-assisted development or Python experience Responsibilities: Take ownership of a business-critical WinForms platform that has been migrated to .NET 8Modernise an established desktop application using current .NET engineering practicesImprove maintainability, automated testing and technical directionSupport the delivery of new business functionalityContribute to software design, architecture and technical decisionsWork closely with our CTO, Head of Engineering and the original software authorHelp shape the platforms future architecture as it evolves through APIs, cloud services and modern web technologiesRemain highly hands-on with C#/.NET developmentCollaborate with the engineering team to influence technical direction and platform evolutionSupport CI/CD and testing practices for a WinForms application Technologies: AIAPIC#CI/CDCloudCTOSupportJavaScriptPythonReactWebWindowsASP.NET.NET FrameworkAzureFrontendRESTSQLTDD More:
We are a growing tech-led software business investing heavily in our core engineering platform following a recent acquisition. We are based in Colnbrook near Heathrow Airport. This is a hands-on senior role focused on modernising a critical Windows desktop platform, with an initial 1-2 weeks onsite for onboarding and knowledge transfer followed by a mostly remote working pattern, with office visits expected every 1-2 months. You will join a collaborative engineering team where your ideas will have real impact, and you will have the opportunity to help shape the future of the platform. Benefits include a salary of up to £75,000, 25 days holiday plus Bank Holidays, NEST pension, Bupa Listening Ear and Westfield Rewards.
last updated 33 week of 2026