Principal Mechanical Engineer

Job title: Principal Mechanical Engineer - PNEDLocation: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this roleSalary: £45,628 - £57,500 dependent on experienceWhat you’ll be doingCollaborate closely with the build organisation, providing engineering support to ensure the final product aligns with original design intentDemonstrate a strong understanding of key requirements and critical dimensions related to major structural componentsLead the assessment and implementation of design changes impacting primary structural elements, whether driven by emergent issues, continuous improvement, or process updatesSupport, or where appropriate, serve as the engineering representative within test and authorisation groupsDevelop specialised knowledge of the unique build sequence of the Reactor Compartment Unit and deliver ongoing engineering support throughout constructionRepresent the engineering function during the planning and execution of major construction milestones within the Reactor Compartment Unit’s scopeInvestigate and present robust technical solutions to challenges encountered during the construction of the Naval Reactor PlantProvide well-reasoned technical recommendations to key stakeholders, including Rolls-Royce and the Ministry of Defence, to support or constructively challenge existing requirementsYour skills and experiencesEssential:Degree-level qualification in Engineering, preferably with a focus on Mechanical or Structural disciplinesProficient in interpreting mechanical drawings, with a solid understanding of geometric dimensioning and tolerancing (GD&T)Familiarity with welding engineering principles and non-destructive examination (NDE) techniquesStrong technical report writing skills, with experience in producing clear justifications for design changesDesirable:Understanding of stress, fatigue, and thermal analysis principles in engineering applicationsAwareness of nuclear radiation shielding requirements and best practicesPrior experience working within a nuclear plant environmentKnowledge of the nuclear industry, including familiarity with regulatory bodies and compliance standardsBenefitsAs 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 Platform Nuclear Engineering Department teamAs a Principal Mechanical Engineer - PNED, you will play a critical role in supporting the design, build, and test phases of the Naval Reactor Plant (NRP) across multiple programmes, ensuring alignments with the original design intent. This includes leading the resolution of complex technical issues encountered during construction and testing, with a focus on developing robust engineering solutions and maintaining the integrity of the supporting safety case.You will provide expert guidance to internal teams including Engineering Delivery, Test & Commissioning, Operations, and Project Management. Additionally, you will represent the business in collaboration with key external stakeholders, including the Ministry of Defence (MoD) and Rolls-Royce Power, ensuring effective coordination across the wider enterprise. We offer relocation support across all Submarine roles, subject to meeting eligibility criteriaWhy BAE Systems?This is a place where you will 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 leave 5 to 10 years of continuous residency in the UK depending in the vetting level required for the role, to allow for meaningful security vetting checks.Closing Date: 25 th September 2025We 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-MS1#LI-HybridWhen applying for this role you will be redirected to BAE systems careers site where you will be required to:Register an account (this is optional, you can apply as a guest)Provide contact informationUpload your cvComplete a short diversity & inclusion questionnaireWhen asked source type, please select "job board advertisement" then "the IET / E+T Jobs #J-18808-Ljbffr