Principal Engineer – Technical Specialist – HVAC/Auxiliary in Edinburgh

Location: Scotstoun/Portsmouth/Filton. We offer a range of hybrid and flexible working arrangements. Please speak to your recruiter about the options for this particular role.

Salary: Up to £60,000 depending on skills and experience.

What you’ll be doing:

• Support the Platform TA in requirements, acceptance, architecture and safety of the Auxiliary Systems scope of work.
• Support to the Zonal Review programme leading to final compartment approval.
• Support in the technical management of Auxiliary System Suppliers, including design reviews.
• Co-ordination of Auxiliary Systems Design Reviews.
• Lead on resolution of key Auxiliary System technical issues.
• Identification and implementation of Lessons Learnt from other programmes.
• Technical risk assessment and mitigation.
• Review of key supplier engineering deliverables.
• Support to Platform TA in achieving Certification.

Your skills and experiences:

• Ability to manage and support specialist multi-discipline, multi-site teams interfacing with a wide range of providers and customers.
• Knowledge and experience in the design, development, integration and operation of Auxiliary/HVAC Systems equipment in the naval environment.
• Appreciation of wider Warship platform design and principles of operation.
• Understanding of Product Safety and environmental evaluation and legislation.
• Experience of internal/external stakeholder and customer management.
• Knowledge of Lloyds Regulations.
• Engineers at all levels should possess an academic qualification in Engineering or other related STEM subjects as well as specific (either academic or professional) qualifications and become recognised as Incorporated or Chartered Engineers through an appropriate recognised professional institution.
• Engineers are encouraged, and will be supported, to achieve the relevant accreditation. Preference will be given to candidates who are already professionally registered.

Benefits:

As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive.

The Auxiliary Systems team:

Maritime Naval Ships are seeking a Principal Engineer, specialising in Auxiliary Systems, to support the Technical Authority in their role as Platform TA for the design, development and spatial integration of the Auxiliary sub-systems on the CSC platform. Your role will be to ensure that Auxiliary System engineering meets the Lifecycle Management governance and reporting requirements of the Company and the Authority, and take responsibility for the requirements, acceptance and safety of the Auxiliary Sub-Systems. This role will support the Platform TA to deliver an affordable, capable ship throughout the Design Definition Phase, as well as supporting in Product Safety, Key Hazard certification and Environmental activities.

Why BAE Systems?

This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

Closing Date: 2nd February 2026 – Interviews will take place w/c 9th February 2026. We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible.