Location:
Helensburgh, GB, G84 8HL

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Onsite or Hybrid: OnSite

Job Title: Commissioning Mechanical Test Engineer

Location: Helensburgh, Argyll and Bute

Compensation: £42,121 - £51,560 + Benefits

Role Type: Full time / Permanent

Role ID: SF67955

Drive Excellence in Submarine Commissioning

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 Commissioning Mechanical Test Engineer at our HMNB Clyde Faslane site.

The role

As a Commissioning Mechanical Test Engineer, you’ll have a role that’s out of the ordinary. You’ll be at the heart of one of the UK’s most critical defence programmes. You’ll ensure submarine systems are tested, calibrated, and commissioned to exacting standards - directly supporting operational readiness and national security.

Day-to-day you’ll be:
Supporting the Senior Test Engineer to optimise team performance and resource use
Conducting mechanical testing, calibration, and commissioning tasks on submarine systems
Engaging with contractors and internal teams to manage risks and meet commissioning goals
Applying safety, quality, and environmental policies during all commissioning activities
Reviewing engineering documentation and contributing to technical problem-solving

This role is full time, 36 hours per week Monday to Thursday and is based on site at HMNB Clyde Faslane.

Essential experience of the Commissioning Mechanical Test Engineer

Proven experience in mechanical commissioning and testing
Ability to work autonomously and collaboratively in high-stakes environments
Strong understanding of safety and quality standards
Experience working with multidisciplinary teams
Effective communication and stakeholder engagement skills

Qualifications for the Commissioning Mechanical Test Engineer

Recognised Mechanical Engineering Apprenticeship (or equivalent), with demonstrable industry experience.
HNC in Mechanical Engineering (or equivalent), supported by relevant practical experience.

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 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. 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.

Babcock

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: 20/07/2026

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