Mechanical Engineer

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Job title: Principal Mechanical Engineer – PNED
Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this role
Salary: £45,628 – £57,500 dependent on experience
What you’ll be doing:
Collaborate closely with the build organisation, providing engineering support to ensure the final product aligns with original design intent
Demonstrate a strong understanding of key requirements and critical dimensions related to major structural components
Lead the assessment and implementation of design changes impacting primary structural elements, whether driven by emergent issues, continuous improvement, or process updates
Support, or where appropriate, serve as the engineering representative within test and authorisation groups
Develop specialised knowledge of the unique build sequence of the Reactor Compartment Unit and deliver ongoing engineering support throughout construction
Represent the engineering function during the planning and execution of major construction milestones within the Reactor Compartment Unit’s scope
Investigate and present robust technical solutions to challenges encountered during the construction of the Naval Reactor Plant
Provide well-reasoned technical recommendations to key stakeholders, including Rolls-Royce and the Ministry of Defence, to support or constructively challenge existing requirements
Your skills and experiences:
Essential:
Degree-level qualification in Engineering, preferably with a focus on Mechanical or Structural disciplines
Proficient 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) techniques
Strong technical report writing skills, with experience in producing clear justifications for design changes
Desirable:
Understanding of stress, fatigue, and thermal analysis principles in engineering applications
Awareness of nuclear radiation shielding requirements and best practices
Prior experience working within a nuclear plant environment
Knowledge of the nuclear industry, including familiarity with regulatory bodies and compliance standards
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 Platform Nuclear Engineering Department team:
As 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 criteria
Why 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 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.
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 , 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 leave 5 to 10 years of continuous in the UK depending in the vetting level required for the role, to allow for meaningful security vetting checks.
Closing Date: 23rd October 2025
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.
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Location:
Barrow-In-Furness
Job Type:
FullTime
Category:
Engineer, Engineering, Mechanical

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