Job Title: Mechanical Building Services Engineer
Location: Plymouth, Devon
Compensation: Up to £48, Depending on Experience + Benefits
Role Type: Full time / Permanent
Role ID: SF
Shape the Future of Engineering at the Heart of UK Defence
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 Mechanical Building Services Engineer at our Devonport Royal Dockyard site.
The role
As a Mechanical Building Services Engineer, you’ll play a critical role in supporting major engineering and infrastructure programmes within one of the UK’s most important defence sites.
Day-to-day, you’ll provide technical engineering expertise across the full lifecycle of building services systems, from requirements capture and concept development to through‑life support and decommissioning.
1. Develop and deliver designs across all stages of the engineering design process, ensuring compliance with relevant legislation and standards.
2. Lead or contribute to engineering tasks, organise workloads, and facilitate progress within a multidisciplinary team.
3. Produce detailed design documentation, assessments, and technical reports, acting as lead author where appropriate.
4. Provide expert advice on maintaining design intent, ensuring adherence to design codes, safety regulations, and statutory requirements.
5. Represent the Mechanical Building Services Technical Authority through onsite system surveys, reviews, and through‑life technical support activities.
This role is full time, 35 hours per week and is based on site at Devonport Royal Dockyard
Essential experience of the Mechanical Building Services Engineer
6. Strong foundation in mechanical engineering principles relating to systems such as steam and condensate, industrial gases, fresh and demineralised water, HVAC, and domestic water services.
7. Proficiency in digital tools, engineering software, and documentation platforms.
8. Knowledge of the engineering design lifecycle and its application within complex projects.
9. Understanding of relevant regulations, legislation, and technical standards for building services design.
10. Experience working within nuclear or other high‑hazard industries.
Qualifications for the Mechanical Building Services Engineer
11. Level 5 qualification in mechanical engineering or building services or a Level 4 qualification with substantial relevant experience.
12. Higher‑level qualifications, membership of professional engineering institutions, or specialist building services certifications - Desirable
Security Clearance
The successful candidate must be 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 Babcock
We’re Babcock — a global FTSE organisation with over 26, 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.