Principal Engineer – Nuclear Substantiation (Site)

Location: Barrow-in-Furness. We offer a variety of hybrid and flexible working arrangements—talk to your recruiter about the options available for this role.

Salary: Starting at £60,000, depending on experience.

As a Principal Engineer, you will play a pivotal role in ensuring the safety and integrity of our nuclear site assets. Your responsibilities will include:

• Authoring and managing design substantiation documentation to support the site nuclear safety case.
• Reviewing analyses, assessments, and calculations related to nuclear design substantiation.
• Supporting periodic safety reviews.
• Taking ownership of deliverables while demonstrating autonomy and leadership.
• Implementing design substantiation requirements effectively.
• Collaborating with a diverse range of stakeholders, including Site Safety Case, Human Factors, and Engineering Authority Teams.
• Mentoring and supporting the development of other Nuclear Substantiation team members.
• Engaging with the wider business on nuclear design substantiation activities.

Essential:

• Experience in the nuclear industry and familiarity with nuclear safety regulations.
• A degree in a STEM subject or equivalent practical experience.
• Proven ability to produce high-quality technical reports.
• A determined approach to driving deliverables through to completion.
• Excellent stakeholder management skills.

Desirable:

• A broad understanding of multiple engineering disciplines.
• Chartered Engineer status from the Engineering Council and membership in a relevant professional body.
• Experience in nuclear design substantiation analysis and assessment.

We offer a competitive pension scheme, employee share plans, and a wide range of flexible health, wellbeing, and lifestyle benefits. Enjoy perks like a green car scheme, private health plans, and shopping discounts. You may also be eligible for an annual incentive!

Join a dynamic team with fantastic development opportunities in both technical and managerial streams. You’ll be involved in the design substantiation and safety justification of various site assets and facilities, including mechanical, civil, structural, and electrical components. Engage in finite element analysis and simulation using cutting-edge tools and techniques. Collaborate regularly with Engineering Authority, Site Specialist Engineers, and other functions, providing a diverse and enriching work experience.

This is an exciting opportunity to grow within the Nuclear Substantiation and Analysis team at BAE Systems. We offer relocation support packages for all Submarine roles, subject to eligibility criteria.

At BAE Systems, you can make a real difference! Join an inclusive culture that values diversity of thought, rewards integrity, and empowers you to reach your full potential. We welcome individuals from all backgrounds and strive to make our recruitment processes as inclusive as possible. If you have a disability or health condition that may affect your performance in certain assessments, please discuss potential reasonable adjustments with your recruiter.

Important Note: Many roles at BAE Systems are subject to security and export control restrictions. Factors such as nationality and residency may affect your eligibility for certain positions. All applicants must meet the Baseline Personnel Security Standard, with many roles requiring higher levels of National Security Vetting.

Closing Date: 5th March 2026. We reserve the right to close this vacancy early if we receive sufficient applications, so apply early!

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