Senior Mechanical Engineer

Babcock Mission Critical Services España SA.; Bristol; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A leading engineering firm in the UK is seeking a Senior Mechanical Engineer to join their team. The role involves complex mechanical systems integration for Defence Nuclear projects, requiring innovative solutions and multidisciplinary collaboration. Candidates should have a relevant engineering degree, proven experience in project lifecycle activities, and excellent communication skills. The position offers a competitive salary, employee share scheme, and benefits including a matched pension contribution and health support initiatives. Hybrid working is available, with flexible arrangements.

Benefits

Matched contribution pension scheme

Access to a Digital GP

Employee share scheme

Payment of Professional Fees

Holiday Trading benefits

‘Be Kind Day’ for volunteering

Employee assistance programme

Qualifications

• Experience delivering engineering activities across the full project lifecycle.
• Ability to work effectively in multidisciplinary teams.
• Strong track record of producing and reviewing detailed engineering documentation.
• Excellent communication skills with stakeholders.

Responsibilities

• Lead delivery of mechanical engineering tasks.
• Guide junior engineers and ensure project milestones are met.
• Foster collaboration across engineering teams.
• Build relationships with customers and provide support.
• Identify and manage project risks.

Skills

Mechanical engineering expertise

Multidisciplinary team collaboration

Technical documentation skills

Communication skills

Education

Engineering degree or equivalent qualification

Job description

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Senior Mechanical Engineer

Location: Bristol, GB, BS16 1EJ Warrington, GB, WA3 6YD Reading, GB, RG14 2PZ Preston, GB, PR2 2YB

Onsite or Hybrid:

Job Title: Senior Mechanical Engineer

Location: Flexible, UK

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, Warrington (Cheshire), Newbury (Berkshire) or Preston (Lancashire).

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, Warrington (Cheshire), Newbury (Berkshire) or Preston (Lancashire).

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.
• 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 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.
• ‘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.

As a leader within the UK nuclear industry, Cavendish Nuclear, part of Babcock International Group, provides a comprehensive range of critical nuclear solutions in clean energy, defence and civil new build and decommissioning projects. Together, we’re innovating to make nuclear safer, faster and cost-effective across the nuclear energy life cycle. Your career with us could take you anywhere within Babcock International Group – from Canada, the USA to Japan. Work with us to create a safe and secure world, 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 [e-mail] 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: 30/12/2025