Senior .NET Developer - Blackpool

Salary: £65,000 - 75,000 per year

Requirements:

• Excellent hands-on development experience with modern C# and .NET
• Meaningful commercial experience with WinForms
• Commercial test-driven development experience, using a test-first Red/Green/Refactor approach
• Strong automated testing experience
• Experience contributing to technical decisions and software design
• Experience owning and modernising existing applications
• Highly desirable: experience migrating WinForms applications to modern .NET
• Highly desirable: exposure to Clean Architecture
• Highly desirable: experience with API design and service-based architecture
• Highly desirable: React or JavaScript exposure
• Highly desirable: AI-assisted development or Python experience

Responsibilities:

• Take ownership of a business-critical WinForms platform that has been migrated to .NET 8
• Modernise an established desktop application using current .NET engineering practices
• Improve maintainability, automated testing and technical direction
• Support the delivery of new business functionality
• Contribute to software design, architecture and technical decisions
• Work closely with our CTO, Head of Engineering and the original software author
• Help shape the platforms future architecture as it evolves through APIs, cloud services and modern web technologies
• Remain highly hands-on with C#/.NET development
• Collaborate with the engineering team to influence technical direction and platform evolution
• Support CI/CD and testing practices for a WinForms application

Technologies:

• AI
• API
• C#
• CI/CD
• Cloud
• CTO
• Support
• JavaScript
• Python
• React
• Web
• Windows
• ASP.NET
• .NET Framework
• Azure
• Frontend
• REST
• SQL
• TDD

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