Senior Software Developer (C#) (Inside IR35 or Fixed Term Contract)
Devon | Hybrid / Remote
We're looking for an experienced Senior Software Developer to help deliver a range of strategic software projects across business-critical systems.
This is a hands-on role where you'll design, build and modernise C# applications, deliver system integrations, reduce technical debt, and support the adoption of AI-assisted development across the team. You'll take ownership of projects from design through to delivery, working closely with developers and business stakeholders.
What you'll be doing
- Develop and enhance modern C# applications
- Modernise and refactor legacy systems
- Design and implement REST API integrations
- Improve application performance, scalability and maintainability
- Deliver high-quality, well-tested software
- Collaborate with technical and business stakeholders
- Mentor developers and promote development best practice
- Support the effective use of AI-assisted development tools to improve productivity and code quality
What we're looking for
- 5+ years' commercial C# development experience
- Strong understanding of software architecture and design principles
- Experience modernising legacy applications
- REST API integration experience
- Strong SQL and database design skills
- Full software development lifecycle experience
- Ability to work independently and lead technical delivery
- Excellent communication and problem-solving skills
Desirable
- Azure and cloud technologies
- CI/CD and automated testing
- Logistics, warehousing or fulfilment systems
- EDI integrations
- Microsoft Business Central
- Experience using AI tools such as GitHub Copilot, Claude Code or similar within software development
You'll be someone who
- Takes ownership and delivers with minimal supervision
- Enjoys solving complex technical problems
- Communicates confidently with both technical and non-technical stakeholders
- Shares knowledge and mentors others
- Has a continuous improvement mindset
This is an excellent opportunity to join a collaborative team delivering high-impact projects while helping shape development practices and the future use of AI within software engineering.