Senior Mechanical Engineer
Location: Either Bristol or Warrington, Cheshire.
Role type: Full time / Permanent.
Compensation: Competitive Salary + Benefits.
At Cavendish Nuclear we are working to create a safe and secure world, together. 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.
Responsibilities
- 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.
Qualifications
- Engineering degree (or equivalent qualification) in relevant engineering discipline, with significant demonstrable experience.
Benefits
- 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.
- Holiday trading allows employees to buy additional leave or sell up to one working week of annual leave. This window opens February through to March annually.
- 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.
- Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.
We’re Cavendish Nuclear — a team of 5,000 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 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: 15/07/2026
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