Principal Mechanical Engineer

Job Title:

Principal Mechanical Engineer
Location:

Portsmouth Naval Base working a hybrid pattern
We offer a range of hybrid and flexible working arrangements. Please

speak

to your recruiter about the options for this particular role
Salary:

Circa £54,500 dependent on experience + bonus scheme
Who we are:
Join BAE Systems and youll be part of something bigger. As a valued member of our global colleague network, youll bring your unique skills and perspectives to help pioneer progress and protect what matters most. Youll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us.
From the depths of the ocean, to the far reaches of space, theres no limit to where a career at BAE Systems could take you.
What youll be doing:
You will provide comprehensive mechanical engineering support across a wide range of platform systems, including fluid, hydraulic, HVAC, firefighting, propulsion and mechanical drive systems. Your role spans multiple programmes, ensuring design integrity, investigating system impacts, and delivering safe, well integrated engineering solutions across diverse naval platforms.
Working closely with stakeholders including MOD teams, overseas navies, OEMs and project groups to capture and guide system requirements.

lead

structured

analysis , maintain configuration

control , prepare authoritative safety evidence, and act as a primary WTA technical contact while supporting wider organisational priorities.
Core duties:
You hold broad knowledge of

complex

platform systems across UK and international markets
You will have a good understanding of applicable industry standards and the ability to operate effectively within CSM, LCM, and other governance and assurance frameworks
You will have the ability to apply mechanical engineering knowledge quickly and confidently to a wide range of platform and projects across multiple platform systems and sub-systems and equipments
You will be an experienced professional engineer at CEng level or equivalent level of capability
You can provide effective line

management

for a team of engineers, ensuring clear

leadership , performance oversight, and professional development
The Asset

Management

team:
This role sits within the Warship Technical Authority (WTA) Service Hub, part of the Asset

Management

team within Warship Support, delivering whole ship, systems and equipment engineering

expertise

and change

management

to ensure safe, assured and high-quality support across Warship Support programmes. The Asset

Management

Team already supports QEC, T45, T23, HUNT, OPV and intentional navies.
As the Principal Mechanical Engineer, you will be providing technical

leadership , governance, and specialist

expertise

across platform systems, delivering core service elements and engineering support to UK and international programmes, while

managing

engineers and contributing to high-quality assurance, transformation, and consultancy activities within the WTA.
Why BAE Systems?
Here youll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work, this is a place where you can grow your career with

confidence

and be empowered to be your best. Youll be recognised for your contribution and enjoy rewards tailored to whats most important to you and your family, support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a

strong

sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make.
A place where everyone can thrive:
Were committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do.
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:

30th March 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.
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