Job Title: Developer
Location: Flexible, UK + Hybrid Working Arrangement
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF
Shape the Future of Nuclear Innovation
At Cavendish Nuclear we’re working to create a safe and secure world, together, and if you join us, you can play your part as a Developer, at our Warrington (Cheshire), Leicester (Leicestershire), Moor Row (Cumbria) or Bristol site.
The role
As a Developer, you’ll have a role that’s out of the ordinary. You’ll be at the heart of projects that support the Nuclear Decommissioning Authority (NDA) and its mission to safely decommission nuclear sites across the UK. You’ll work on a suite of applications that drive project performance, maintaining and enhancing existing systems while developing new solutions to meet evolving client needs.
Day‑to‑day you’ll be required to:
1. Develop and maintain software applications using C#, ASP.Net, SQL Server, and JavaScript frameworks.
2. Collaborate with clients and internal stakeholders to understand requirements and deliver tailored solutions.
3. Enhance existing systems and design new features to improve performance and usability.
4. Work closely with a small, supportive team to tackle technical challenges.
5. Ensure code quality and system reliability through rigorous testing and documentation.
This is a permanent, full‑time role working 37 hours per week based in Warrington (Cheshire), Leicester (Leicestershire), Moor Row (Cumbria) or Bristol site. Hybrid working patterns are available.
Essential experience of the Developer:
6. Proven experience with C#, JavaScript, and SQL.
7. Strong interpersonal and communication skills.
8. Background in maintaining and developing existing applications alongside new project work.
Qualifications for the Developer:
9. Degree in Computer Science or related discipline (or equivalent experience).
Security Clearance
The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (
What we offer
10. Generous holiday allowance
11. Matched contribution pension scheme, with life assurance
12. Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
13. Employee share scheme
14. Employee shopping savings portal
15. Payment of Professional Fees
16. Reservists in the armed forces receive 10-days special paid leave
17. Holiday Trading is a benefit that allows UK Cavendish employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. This Window opens February through to March annually.
18. ‘Be Kind Day’ enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity
19. Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
Cavendish Nuclear
As a leader within the UK nuclear industry, Cavendish Nuclear, part of