Senior Mechanical Engineer
Senior Mechanical Engineer
Bristol, GB, BS16 1EJ Warrington, GB, WA3 6YD
Job Title: Senior Mechanical Engineer
Location: Either Bristol or Warrington, Cheshire
Compensation: Competitive Salary + Benefits
Role Type: Full time / Permanent
Role ID: SF66847
Shape the Future of UK Defence Infrastructure
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 Senior Mechanical Engineer, at one of our key locations: Bristol or Warrington (Cheshire).
The role
As a Senior Mechanical Engineer, you’ll have a role that’s out of the ordinary. This role will contribute to a high-impact public sector Defence Nuclear infrastructure initiative focused on enhancing operational resilience and sustainability across critical systems. The project involves complex mechanical systems integration, requiring innovative engineering solutions within a multidisciplinary team.
Day-to-day, you’ll lead the delivery of complex mechanical engineering tasks, applying deep technical expertise to solve challenging problems, produce and review high-quality documentation, and guide junior engineers, while collaborating across disciplines to ensure project milestones are met with precision and integrity.
- Foster collaboration across engineering and cross-functional teams to ensure cohesive project delivery and technical alignment.
- Build and maintain strong relationships with customers, providing clear communication and technical insight to support project progress and business development.
- Apply relevant procedures, codes, and standards rigorously to all engineering activities, ensuring compliance and technical excellence.
- Lead the production and review of engineering outputs—including calculations, drawings, models, and reports—while maintaining design integrity throughout the lifecycle.
- Identify and manage project risks, contribute to safety assessments, and support continuous improvement through technical evaluations and process enhancements.
This is a full-time, permanent position (37 hours per week) and provides hybrid working arrangements with three days in the office, based at one of our key locations: Bristol or Warrington.
Essential experience of the Senior Mechanical Engineer:
- Proven experience delivering engineering activities across the full project lifecycle, from concept design through to implementation.
- Demonstrated ability to work effectively within multidisciplinary teams, contributing to complex technical solutions and project outcomes.
- Strong track record of producing and reviewing detailed engineering documentation, including calculations, drawings, and technical reports.
- Excellent communication skills with the ability to engage confidently with stakeholders and customers to resolve technical and delivery challenges.
Qualifications for the Senior Mechanical Engineer:
- Engineering degree (or equivalent qualification) in relevant engineering discipline, with significant demonstrable experience.
Security Clearance
The successful candidate must be able to achieve and maintain Standard (BPSS) / Security Check (SC) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)
What we offer
- Generous holiday allowance
- Matched contribution pension scheme, with life assurance
- Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
- Employee share scheme
- Employee shopping savings portal
- Payment of Professional Fees
- Reservists in the armed forces receive 10-days special paid leave
Cavendish
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 careers@babcockinternational.com 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: 20/05/2026
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