Job Title: Senior Mechanical Services Engineer
Location: Plymouth, Devon
Compensation: £44,600 - £55,800 Depending on Experience + Benefits
Role Type: Full time / Permanent
Role ID: SF74749
Lead complex engineering projects that help protect the UK’s future
At Babcock 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 Services Engineer at our Devonport Royal Dockyard site.
As a Senior Mechanical Services Engineer, you’ll play a pivotal role in delivering complex multidisciplinary engineering solutions that support critical defence infrastructure and national security programmes. Working within a highly skilled engineering team, you’ll lead the design, development and delivery of mechanical systems and services across major projects, providing technical leadership from concept through to construction and handover.
Day-to-day, you’ll a unique opportunity to influence high-profile engineering programmes, collaborate with specialists across multiple disciplines, and develop your career within one of the UK's leading defence, aerospace and engineering organisations. Your work will directly contribute to the safe operation, maintenance and future readiness of strategic infrastructure while giving you the opportunity to expand your technical expertise and leadership capabilities.
- Leading the delivery of mechanical services and multidisciplinary design work packages to agreed safety, quality, schedule and cost requirements.
- Managing technical requirements, reviewing calculations, drawings, specifications and engineering deliverables to ensure fit-for-purpose solutions.
- Driving design reviews, risk assessments, constructability activities and engineering assurance processes.
- Coordinating with engineering, construction, commissioning, operations and supply chain stakeholders to achieve successful project delivery.
- Mentoring engineers and designers while providing technical leadership and guidance across project teams.
This role is full time, 35 hours per week and is based on site at Devonport Royal Dockyard.
Essential experience of the Senior Mechanical Services Engineer
- Experience designing and implementing mechanical systems and services, particularly fluid systems, water systems, piping systems, pneumatic systems or hydraulic systems.
- Experience substantiating and managing complex engineering requirements within regulated industries.
- Experience supporting the construction, operation, maintenance, repair or refit of complex engineering facilities, ideally within defence, nuclear, marine or infrastructure environments.
- Strong technical design management experience across the full engineering design lifecycle.
Qualifications for the Senior Mechanical Services Engineer
- Degree, or equivalent qualification, in Mechanical Engineering or a related engineering discipline.
- Chartered Engineer status - Desirable
- Membership of a relevant professional engineering institution - Desirable
- Significant demonstrable engineering experience with the capability to register with the Engineering Council at Incorporated Engineer or Chartered Engineer level - Desirable
Security Clearance
The 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. This means that your eligibility for certain roles may be affected by your place of birth, nationality, current or former citizenship, and any residency you hold or have held. 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
- Holiday Trading is a benefit that allows UK Babcock employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. There is an annual Window to request this benefit. ‘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 Babcock — a global FTSE 100 organisation with over 26,000 people working together to make a difference.
Here, you’ll be part of something bigger. From initial design to final decommissioning, your work will contribute to products and services that are essential to national security and public infrastructure. Together, we’re building a future that lasts — not just through the impact we make, but through meaningful careers that respect your work-life balance.
We call that lifetime engineering.
Join us and see 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: 22/07/2026
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