Principal Engineer - Nuclear (Mechanical)

Job Description

Job title: Principal Engineer - Nuclear (Mechanical)

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: Competitive

What you'll be doing:

  • Liaison with build organisation and provision of engineering support to ensure the as built product reflects design intent
  • Understand the key requirements and critical dimensions for major structural components
  • Take the lead on design changes that affect major structural components, whether they originate from emergent issues, process improvement, etc
  • Support or act as the engineering member of the test and authorisation groups (depending on experience)
  • Develop knowledge of the unique build sequence of the Reactor Compartment Unit of the submarine and provide engineering support
  • Participate as an engineering representative in the planning and execution of all major construction evolutions with the scope of the Reactor Compartment Unit
  • Development & presentation of sound technical solutions to issues arising during construction of the Naval Reactor Plant
  • Providing technical rationale and sound engineering recommendations to Rolls-Royce and MoD to challenge existing requirements

Your skills and experiences:


  • Engineering degree level qualification - Mechanical or Structural as a discipline
  • Ability to interpret mechanical drawings, including knowledge of geometric dimensioning and tolerancing
  • Awareness of weld engineering and Nos-Destructive Examination techniques
  • Technical report writing skills & experience of justifying design change


  • Knowledge of stress, fatigue, and thermal analysis
  • Nuclear radiation shielding awareness
  • Previous Nuclear Plant experience
  • Knowledge of the Nuclear Industry and its regulators


You'll receive benefits including a competitive pension scheme, enhanced annual leave incentive and a Company contributed Share Incentive Plan. You'll also have access to additional benefits such as flexible working, an employee assistance programme, Cycle2work and employee discounts - you may also be eligible for an annual incentive.

The Platform Nuclear Engineering Department team:

As a Principal Engineer - Nuclear (Mechanical), you will be supporting the design, build & test activities on the Naval Reactor Plant (NRP) across multiple programmes to ensure the design intent is met in the final product. This includes coordinating and leading the resolution of a diverse set of issues that arise during the build and test of the reactor plant, with a strong emphasis on developing technical solutions to problems, as well as ensuring that the associated safety case is adequate, coupled with providing advice to various internal teams such as Engineering Delivery, Test & Commissioning, Operations and Project. Externally, you will be required ti represent the business and operate alongside out Enterprise partners, namely the Ministry of Defence (MoD) and Rolls-Royce Marine Power.

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, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. We welcome candidates from all backgrounds and particularly from sections of the community who are currently underrepresented within our industry, including women, ethnic minorities, people with disabilities and LGBTQ+ individuals.

We also 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 working for BAE Systems will be subject to both security and export control restrictions. These restrictions mean that factors including your nationality, any previous nationalities you have held, and your place of birth may limit those roles you can perform for the organisation.

Closing Date: 22nd March 2024

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.