Principal Engineer - Signatures; Non-Acoustic

Responsibilities

• Lead the development of the Stealth Engineering Above Water Signatures capability.
• Collaborate with cross‑functional teams to design low‑signature equipment and systems.
• Help define technical requirements, test methods, and approval criteria.
• Review design documents to confirm that above‑water signature requirements are met.
• Lead modelling efforts for radar, infrared, visual, and RF signatures using custom and commercial tools.
• Develop testing methodologies to confirm signature performance.
• Manage research with internal teams and university partners.
• Improve stealth features on in‑service submarines.

• A degree (or equivalent experience) in Maths, Physics, Electrical Engineering, or another STEM field.
• Experience with modelling software or programming tools.
• A strong grasp of electromagnetism, radar, or infrared and visual detection technologies.
• Familiarity with stealth systems or signature control methods.

• A postgraduate qualification in a STEM subject.
• Experience in defence or large‑scale manufacturing.
• Knowledge of submarine or naval systems.

As a Principal Engineer, you will be working with a team tasked with assuring the stealth performance of submarines built in Barrow. From concept system designs to the assessment of the whole submarine as part of major commissioning trials, you will be involved in all aspects of the submarine lifecycle from concept through to support of the in‑service fleet. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria.

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.

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.

Salary: circa £50,000 depending on skills and experience. In addition to 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.