Senior C# Developer

.NET - UK Remote Working

Ref: 6222Wednesday 11 November 2026

£50,000 - £65,000

Senior C#/.NET Developer - UK Remote 
 
Are you a seasoned C# developer looking for a senior role where your work has a real impact?
 
This is a chance to join a well-established software business whose products are relied on by public sector organisations across the UK. Our client has a strong track record of long-serving team members, thanks to a culture that values good engineering, ongoing learning and a healthy work/life balance. They’re now growing their development team and need a senior engineer to help shape the next chapter of one of their core products.
 
What is in it for you:
  • Salary of £50,000 - £65,000, reviewed annually
  • Remote working within the UK
  • 25 days’ holiday, increasing with length of service
  • Company pension and life assurance
  • Funded Microsoft training and certification
 
The Role:
  • You’ll take a leading technical role in evolving a mature, business-critical application.
  • You’ll gradually bring older parts of the codebase up to date while delivering new functionality for customers.
  • Day to day, you’ll work closely with your team lead and fellow developers, help steer technical design, set the bar on code quality and share your knowledge with less experienced colleagues through reviews and pairing.
  • You’ll also work directly with customer requirements, turning individual requests into features that benefit the wider user base.
 
To Be Considered:
Essential:
  • 5+ years’ commercial C#/.NET, including .NET 6+
  • Senior-level experience, leading technical decisions and mentoring others
  • ASP.NET Core MVC and Web APIs
  • TypeScript/JavaScript, HTML and CSS
  • SQL Server design and performance tuning
  • REST APIs and third-party integrations
  • Modernising legacy code (WinForms or .NET Framework ideally)
Desirable:
  • Azure
  • React or Angular
  • .NET MAUI
 
This role suits a senior developer who enjoys owning technical problems, improving systems over time and writing software that serves a real purpose. You’ll get remote flexibility, a supportive team and the chance to make a lasting mark on a product that matters.
 
APPLY NOW with your most up-to-date CV for consideration.
 
Bright Purple is an equal opportunities employer: we are proud to work with clients who share our values of diversity and inclusion in our industry.
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