Principal Process Engineer

Job Title:                          Principal Process Engineer Location:                          Flexible, UK + Hybrid Working Arrangements Compensation:                Attractive Salary + BenefitsRole Type:                        Full time / Permanent Role ID:                            SF71440Lead the Breakthrough Engineering That Wins the FutureAbout UsAt Cavendish Nuclear, we’re working to create a safe and secure world, together. If you join us, you can play your part as a Principal Process Engineer within our Business Winning team at one of our main sites: Warrington (Cheshire), Preston (Lancashire), Leicester (Leicestershire), Newbury (Berkshire), or Bristol. As a Principal Process Engineer within our  Business Winning, you’ll play a central role in shaping the technical solutions and engineering excellence that help us secure the projects powering the UK’s clean‑energy, defence and decommissioning future. You’ll lead multidisciplinary engineering inputs that strengthen our bids, influence high‑value programmes, and contribute directly to work that protects national capability.The RoleAs a Principal Process Engineer, you will provide process engineering leadership across complex bids and early‑stage project definition within our  Business Winning teamThis is a full‑time role based at one of our main sites: Warrington (Cheshire), Preston (Lancashire), Leicester (Leicestershire), Newbury (Berkshire), or Bristol with travel to other Cavendish Nuclear and customer locations as required. Hybrid working arrangements are available.Day‑to‑day you’ll be required to:Lead the process engineering elements of bids.Develop and deliver engineering scope, schedules and resource plans.Ensure technical integrity, compliance, and quality.Produce and review technical reports and verification plans.Promote engineering best practice and mentor others.Essential experience of the Principal Process Engineer:Significant demonstrable experience in a relevant engineering discipline.Chartered Engineer status or working towards it.Experience managing teams delivering technical activities.Ability to interface with multiple disciplines and stakeholders.Strong communication and influencing skills.Qualifications for the Principal Process Engineer:Essential:Engineering degree (or equivalent) with significant experience.Security ClearanceThe successful candidate must be a sole UK national who is able to achieve and maintain Security Check (SC) security clearance for this role.Many of the positions within our company are subject to national security clearance and Trade Control restrictions. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK ( we offerGenerous holiday allowanceMatched contribution pension scheme, with life assuranceAccess to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+Employee share schemeEmployee shopping savings portalPayment of Professional FeesReservists receive 10‑days special paid leaveHoliday Trading scheme‘Be Kind Day’ volunteering leaveFlexible working optionsA dynamic working environmentCavendish We’re Cavendish Nuclear — a team of c5,000 specialists and a core part of Babcock International Group.Here, you’ll be part of something bigger. Across clean energy, defence, and civil decommissioning, your work will contribute to projects that are critical to energy security and national protection. Together, we’re shaping a future that lasts — not only through the impact we make, but through meaningful careers that respect your work-life balance.Join us and discover how far we can go, together.We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email with the subject header ‘Reasonable adjustments requirement’. We’re committed to building an inclusive culture where everyone’s free to thrive. We are happy to talk about flexible working – please ask about alternative patterns of work at interview.Closing date: 07/10/2026#CAVDESTNUC