
BAE Systems engages in the design, development, manufacture, and support of defense and aerospace systems used in the air, on land, at sea, and in space. BAE Systems provides electronic systems and subsystems for military and commercial applications; security and protection products for law enforcement and first responders; and armored combat vehicles, artillery systems, and intelligent munitions, as well as support and service solutions for defense, intelligent, and civilian systems.

BAE Systems engages in the design, development, manufacture, and support of defense and aerospace systems used in the air, on land, at sea, and in space. BAE Systems provides electronic systems and subsystems for military and commercial applications; security and protection products for law enforcement and first responders; and armored combat vehicles, artillery systems, and intelligent munitions, as well as support and service solutions for defense, intelligent, and civilian systems.
Sector: Defence, aerospace and security
Headquarters (U.S. subsidiary): Falls Church, Virginia
Founded: 30 November 1999 (merger forming BAE Systems plc)
Employees (approx.): ~41,000–43,000
Corporate status: Publicly listed multinational
National defence, aerospace platforms, intelligence & security, and public safety protection
1999
Aerospace & Defence
Total Funding: 142200000.00 USD
Job Title: Senior Commissioning Engineer – Mechanical
Location: Barrow-in-Furness (On site)
Salary: £35,802+
What You’ll Be Doing
Essential Your skills and experiences:
Desirable
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 SMITE Mechanical Commissioning Team We are seeking a competent Mechanical Commissioning Engineer responsible for the testing and commissioning of nuclear-powered submarines. You will be accountable for the activities you lead during your shift and will take ownership of becoming a Subject Matter Expert (SME) for designated test systems. This role requires strict adherence to company policies, procedures, and all relevant legislation while ensuring the highest standards of safety, quality, and compliance are maintained at all times. 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: 12th September 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.