Maintenance and Substantiation Engineer - Electrical

Join to apply for the Maintenance and Substantiation Engineer - Electrical role at Babcock International Group.

Location: Plymouth, Devon

Compensation: £43,935 – £49,104 depending on experience + Benefits

Role Type: Full time / Permanent

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 Maintenance Substantiation Engineer at our Devonport Royal Dockyard site.

The role:

• As a Maintenance Substantiation Engineer, you’ll be a vital part of our Devonport Engineering Technical Authority team, supporting the Royal Navy’s submarine refit programme.
• Day‑to‑day, you’ll deliver engineering support and maintenance documentation for a wide range of electrical assets across our Nuclear Licensed Site, MOD Authorised Site, and Non‑Nuclear areas.
• This is a unique opportunity to contribute to national defence, develop your technical expertise, and grow your career in a highly specialised environment.
• Producing and amending maintenance documentation for electrical assets across nuclear and non‑nuclear sites.
• Interpreting drawings, manuals, and safety reports to ensure compliance with statutory legislation and design standards.
• Delivering documentation aligned with Licence Conditions and nuclear safety cases.
• Collaborating with engineering and safety teams to meet project goals.
• Occasionally working in radiologically controlled areas, at height, or in confined spaces (training provided).
• Developing maintenance regimes for a wide range of assets across the site.
• Collaborating with technical authority engineering teams to provide guidance and support.
• Interacting with on‑site maintainers and internal stakeholders to ensure compliance and safety.
• Responding to safety reporting by amending documentation as required.

This role is full time, 35 hours per week and is based on site at Devonport Royal Dockyard.

Essential Experience Of The Maintenance Substantiation Engineer:

• Proven background in electrical engineering, ideally with maintenance experience.
• Experience in HV/LV systems or control and instrumentation environments.
• Understanding of nuclear safety case substantiation (training provided).
• Ability to work within regulated environments and meet compliance standards.
• Electrical Test and Inspection expertise.
• Background in EC&I, HV/LV systems or Fire Alarm systems.
• Ability to interpret technical drawings and documentation.
• Understanding of electrical legislation.
• Commissioning engineering experience – desirable.

Qualifications For The Maintenance Substantiation Engineer:

• Level 4 qualification in a relevant engineering discipline (Level 3 considered if committed to achieving Level 4 and with relevant experience).
• Higher National Certificate (HNC) in a relevant engineering discipline preferred.
• Candidates with strong field experience and willingness to work towards HNC will be considered.

Security Clearance:

The successful candidate must be a sole UK national who is able to achieve and maintain Naval Nuclear Propulsion Information (NNPPI) 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.

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 allows employees to buy additional leave or sell up to one working week of annual leave from their entitlement (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 International has helped to defend nations, protect communities and build a better world for over a century. 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 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: 05/01/2026