Principal Mechanical Engineer
Location: Plymouth, Devon (Hybrid Work: 2 days onsite, 3 days remote)
Compensation: Starting from £59,110 + benefits
Type: Full time / Permanent
Closing Date: 27/11/2025
The Role
As a Principal Mechanical Engineer you will lead the design and development of critical infrastructure for the Royal Navy. You will review and approve contractor designs, ensuring compliance and excellence throughout the full design lifecycle.
Responsibilities
* Review, approve and accept mechanical designs for major infrastructure projects.
* Advising contractors and stakeholders to ensure technical integrity and compliance.
* Use CAD and 3D modelling tools (e.g., Autodesk, Inventor) to assess design proposals.
* Collaborate with technical authorities and engineering managers across Babcock.
* Support the growth of a specialist engineering team within Strategic Infrastructure.
Essential Experience
* Previous senior engineering role, ideally with line management duties.
* Proven experience in MEP systems for industrial or building design.
* Strong background in design engineering, including CAD or BIM.
* Ability to operate in highly regulated environments.
* Excellent stakeholder engagement and communication skills.
Qualifications
* Degree-qualified in Mechanical Engineering (or equivalent).
* Chartered Engineer status preferred (or significant experience in lieu).
* Additional certifications in building services or nuclear environments advantageous.
Security Clearance
The successful candidate must be able to achieve Security Check (SC) clearance. Eligibility may be affected by place of birth, nationality, citizenship and residency.
What We Offer
* Generous holiday allowance
* Matched contribution pension scheme with life assurance
* Access to Digital GP, annual health checks and nutritional consultations via Aviva DigiCare+
* Employee share scheme and shopping savings portal
* Professional fees paid
* Reservists receive 10‑day special paid leave
* Holiday trading for UK employees (buy or sell up to one working week of leave)
* 'Be Kind Day' – one paid day annually for volunteering
* Comprehensive development and wellbeing programmes
Inclusion and Flexible Working
We are a disability confident committed employer. If you need reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject ‘Reasonable adjustments requirement’. We welcome flexible working patterns; please ask about alternatives during the interview.
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