Job Title: Principal Electrical, Control and Instrumentation Engineer
Location: Flexible, UK + Hybrid Working Arrangement
Compensation: Attractive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF
Designing Safety‑Critical Systems That Protect People, Communities and The Future
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 Principal Electrical, Control and Instrumentation Engineer, at any of our main Cavendish Nuclear sites.
The role
As a Principal Electrical, Control and Instrumentation Engineer (EC&I), you’ll have a role that’s out of the ordinary. You’ll be a key contributor to a major civil nuclear decommissioning programme. You’ll work within a multidisciplinary team to develop and integrate complex mechanical systems, applying innovative engineering solutions to support the safe deconstruction and futureproofing of nuclear facilities.
Day-to-day, you’ll be required to
1. Promote effective collaboration across Engineering and other functional teams
2. Interface with customers and the supply chain on design issues and support procurement specifications
3. Ensure correct application of procedures, codes and standards to technical and engineering activities
4. Contribute to product safety assessments and act as a technical interface with stakeholders
5. Conduct technical investigations and analysis to resolve problems and improve designs
6. Drive process improvements across the operational/design lifecycle to enhance quality and efficiency
This is a full‑time role working 37 hours per week. The role can be based at one of Cavendish Nuclear’s key locations including Warrington (Cheshire), Leicester (Leicestershire), Humberside (East Yorkshire), Cumbria (Westlakes), Preston (Lancashire), Newbury (Berkshire) or Bristol. Hybrid working patterns are available, with an expectation of three days per week on site.
Essential experience of the Principal EC&I Engineer:
7. Understanding of IEC- and IEC- standards
8. Familiar with the nuclear functional safety lifecycle
9. SIL determination and verification
10. Experience working with the safety case team
Qualifications for the Principal EC&I Engineer:
11. Engineering degree (or equivalent qualification) in relevant engineering discipline and/or Chartered status or actively working towards Chartered status
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
12. Generous holiday allowance
13. Matched contribution pension scheme, with life assurance
14. Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
15. Employee share scheme
16. Employee shopping savings portal
17. Payment of Professional Fees
18. Reservists in the armed forces receive 10-days special paid leave
19. 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.
20. ‘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
21. Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
Cavendish
We’re Cavendish Nuclear — a team of c5, specialists and a core part of