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’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:
20th November 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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