Job Title\: Principal Engineering Manager - Support Engineering Location\: Barrow, Brough or Filton - On site Salary\: Negotiable dependant on experience What you’ll be doing Lead key collaboration with MoD, industry partners, and internal teams, resolving integration issues and aligning maintenance design with programme and through-life support needs Own and deliver Maintenance Derivation outputs for all Submarine programmes, including RCM in line with DEFSTAN 00-045, BR1313A, S3000L and DefStan 00-600, providing the assured solution to the MoD Act as the Maintenance Derivation and ILS/IPS Subject Matter Expert, providing technical authority across supportability, AR&M, nuclear safety interfaces, and Design for Support activities Manage Maintenance Derivation across the lifecycle, including design change impacts, Combat System integration, and transition to In-Service maintenance within UMMS post-commissioning Provide technical leadership, coaching, and Nuclear SQEP support to the ILS and Support Engineering teams, developing capability and assuring quality outputs Drive support strategy and innovation, influencing policy, tools, and processes to embed best practice across submarines support engineering Your skills and experiences Essential: Expert knowledge of ILS / IPS disciplines Proven delivery of ILS / IPS artefacts Robust understanding of Availability, Reliability & Maintainability (AR&M) Broad experience across the engineering lifecycle High awareness of Product Integrity, Safety, and SHE Desirable: Ex-Submariner / Naval background Masters Level qualification in relevant subject 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 Integrated Logistic Support Team The Integrated Logistic Support (ILS) Team sits at the core of the UK’s submarine programmes, delivering and assuring the onboard maintenance solutions that keep submarines safe, operational, and ready for service throughout their lives. Responsible for developing and approving the complete maintenance solution—effectively the submarine’s “operating and maintenance manual”—the team provides formal technical sign-off at key milestones, including launch and dive. Working across all current and future submarine programmes within a long-term order book, the team collaborates closely with shipyards, the Ministry of Defence, and industry partners. With a large, specialist team and significant leadership scope, this is a highly influential environment for engineers who want to shape through-life support, apply deep technical expertise, and directly enable the safe operation of submarines for decades to come. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. 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\: 18th 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. LI-JM2 LI-Onsite