Principal Engineer - Systems Engineering in Frimley

Location: Barrow-In-Furness, Filton, Frimley, BroadOak, Faslane. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role.

What you’ll be doing:

• Provide subject matter expertise and advice to internal and external stakeholders on Systems Engineering and Model Based Systems Engineering.
• Work in collaboration with other systems engineers and domain experts to establish and agree the functional capabilities of your assigned systems of interest.
• Communicate conceptual architectural designs to the appropriate technical authorities to obtain agreement and acceptance.
• Liaise with internal and external stakeholders such as specialist engineer teams, MoD and industrial partners to communicate and clarify the proposed solution.

Your skills and experiences:

• STEM related degree or previous experience within the Automotive/Defence/Telecommunications/Nuclear environment.
• Knowledge of the engineering lifecycle with experience of operating in the concept/design phase and awareness of the entire engineering lifecycle.
• Worked on concept/designs or early proof of concept.
• Knowledge of recognised safety standards.

The Systems Engineering team:

You will be joining a diverse team of 70 across the wider UK who range in specialities from electrical and electronic engineers all the way to designers and network engineers. You will have the opportunity to work closely with internal stakeholders from other work streams as well as interfacing with the MOD customer and suppliers on a regular basis. This is an exciting opportunity as you will be working on the most complex systems in the world for national defence for First of class submarine design. This is an exciting time to join BAE as the SSNA programme is growing so the potential for growth and development within this programme is great.

We offer relocation support packages across all Submarines 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: 22nd January 2026. 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.