Senior Mechanical Engineer in Preston

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: Warrington (Cheshire) or Preston (Lancashire).

The role involves being a key contributor to a major civil nuclear decommissioning programme, focusing on the safe dismantling and remediation of legacy nuclear infrastructure, with an emphasis on environmental protection, regulatory compliance, and long-term sustainability. You’ll work within a multidisciplinary team to develop and integrate complex mechanical systems, applying innovative engineering solutions to support the safe deconstruction and future-proofing of nuclear facilities.

Day-to-day responsibilities include:

• Leading the delivery of complex mechanical engineering tasks, applying deep technical expertise to solve challenging problems.
• Producing and reviewing high-quality documentation and guiding junior engineers.
• Collaborating across disciplines to ensure project milestones are met with precision and integrity.
• Fostering collaboration across engineering and cross-functional teams for cohesive project delivery and technical alignment.
• Building and maintaining strong relationships with customers, providing clear communication and technical insight to support project progress and business development.
• Applying relevant procedures, codes, and standards rigorously to all engineering activities, ensuring compliance and technical excellence.
• Leading the production and review of engineering outputs—including calculations, drawings, models, and reports—while maintaining design integrity throughout the lifecycle.
• Identifying and managing project risks, contributing to safety assessments, and supporting continuous improvement through technical evaluations and process enhancements.

This is a full-time, permanent position (37 hours per week) with hybrid working arrangements, based at one of our key locations: Warrington (Cheshire), Hessle (East Riding of Yorkshire), or Preston (Lancashire).

Essential experience:

• 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:

• 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.

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.
• Holiday Trading allows UK Cavendish employees to buy additional leave or sell up to one working week of annual leave from their annual entitlement.
• Be Kind Day enables employees to take one working day's paid leave a year 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.

Cavendish Nuclear is 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.

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: 04/05/2026