Job title: Principal Mechanical Engineer – Marine Engineering\n\nLocation: Portsmouth – Onsite only\n\nSalary: Up to 58,500 (dependent on skills and experience)\n\nWhat you’ll be doing:\n\nProviding oversight and assurance on behalf of the MOD customer for Warship Maintenance and upgrades Through-life\n\nAssists in the production of estimates, creates and/or assists in the production of design requirement specifications\n\nUndertake functional design and/or provide qualification and evidence for acceptance, fitness for purpose, legislative requirements, and safety\n\nDevelops, promotes and shares new technologies for implementation across businesses and programme(s)\n\nActs as an engineering, technical or design authority for a sub-system\n\nProvides technical leadership and guidance on matters relating to a discipline, may occasionally lead a team of engineers including line management responsibility\n\nYour skills and experiences:\n\nExperienced professional engineer, with sufficient depth and breadth of knowledge and willingness to work towards Chartership\n\nKnowledge, understanding and experience in a wide range of Mechanical engineering activities\n\nsufficient breadth of technical knowledge/experience to make sound engineering decisions in all technical areas and shall seek support from specialist engineers where necessary\n\nExperience in any of the following systems: Auxiliary systems including, HVAC, Fuel Systems, Gas Turbine Services, Fresh Water Services, Sea Water Services, Black and Grey Water Systems, Bilge and Sullage Systems, Gas Systems, Intake and Exhaust Systems, Chilled Water Systems, Lube Oil and Hydraulics\n\nSafety, including being able to provide demonstrable experience of taking responsibility for safety decisions using sound safety management processes/tools\n\nBenefits:\n\nAs well as a competitive pension scheme, BAE Systems also offers 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.\n\nThe Warship Technical Authority team:\n\nUnder the UK MoD Common Support Model (CSM), complex Warship Design Authority is comprised of the DE&S Warship Approving Authority (WAA) and the BAES Warship Technical Authority (WTA). This exciting role forms part of the T45 WTA and provides governance and oversight of Engineering decisions that primarily affect the T45 platform. In certain situations, this may extend to wider WTA supported platforms as the business requirements develop\n\nThe primary responsibility of this role is to ensure the design intent and safety of the T45 platform.

It also involves collating and presenting assurance evidence to the corresponding WAA. The role operates under the definitive engineering authority of the T45 WTA Class Lead Engineer (CLE), ensuring that all decisions and outputs align with the required standards and governance\n\nWhy BAE Systems?\n\nThis is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values 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 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.\n\nPlease 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 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 Security Vetting where applicants must typically have 5 to 10 years of continuous in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.\n\nClosing Date: 3rd September 2025.\n\nWe 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.\n\n#LI-TP1 #LI-Onsite