Job Title: Principal Piping Stress Engineer
Location: Warrington, Cheshire OR Humberside, East Yorkshire
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF
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 Piping Stress Engineer, at our Warrington (Cheshire) or Humberside (East Yorkshire) site.
The role
As a Principal Piping Stress Engineer, you’ll have a role that’s out of the ordinary. You'll lead the stress analysis and integrity of complex piping systems that sit at the heart of a nationally critical programme — including new fuel conversion capability being delivered at the Springfields site in Preston.
Cavendish Nuclear is powering one of the UK’s most strategically important nuclear programmes, partnering with Springfield Fuels Limited to deliver a brand‑new, cutting‑edge facility at the Springfields site in Preston that will convert Reprocessed Uranium into UF6 at a scale of 2, tonnes per year. This nationally critical project, featuring a new RepU conversion plant, a Fluorine Production Plant and modern support facilities, is set to be operational by, and we’re building a major multidisciplinary team to make it happen.
Day‑to‑day you’ll be required to:
1. Lead the piping stress analysis design basis, critical line list and support specifications for complex process and power systems.
2. Perform piping stress analysis and pressure vessel assessments using Hexagon Caesar II and PV Elite, including static/dynamic flexibility studies.
3. Select and qualify pipe supports, and conduct vibration studies to identify sources and mitigate risks to safety, reliability and performance.
4. Review and approve vendor drawings, data sheets and analysis, acting as an intelligent customer and ensuring quality assurance and quality control standards.
5. Collaborate with piping engineers, designers, vendors and client counterparts, undertaking site visits and coordinating interfaces across disciplines
This is a permanent, full‑time role working 37 hours per week based in Warrington (Cheshire) or Humberside (East Yorkshire).
Essential experience of the Principal Piping Stress Engineer:
6. Demonstrable proficiency with Hexagon Caesar II for piping stress analysis.
7. Demonstrable proficiency with Hexagon PV Elite for pressure vessel analysis.
8. Applied experience with ASME B31.1 (Power Piping) and ASME B31.3 (Process Piping), and familiarity with BS EN for metallic industrial piping.
9. Strong track record reviewing third‑party analyses and vendor documentation, with intelligent customer oversight.
10. Ability to coordinate multi‑disciplinary teams and deliver within robust QA/QC frameworks.
Qualifications for the Principal Piping Stress Engineer:
11. Degree in Engineering (mechanical or related discipline) or equivalent experience.
12. Deep, hands‑on experience in piping stress engineering within industrial, power or process environments.
Security Clearance
The successful candidate must be able to achieve and maintain Standard (BPSS) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (
What we offer
13. Generous holiday allowance
14. Matched contribution pension scheme, with life assurance
15. Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
16. Employee share scheme
17. Employee shopping savings portal
18. Payment of Professional Fees
19. Reservists in the armed forces receive 10-days special paid leave
20. 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.
21. ‘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
22. 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