Senior Mechanical Engineer
Confirmed on the employer's own hiring board on Nov 2, 2026. First seen by Alion on Sep 23, 2026. BAE Systems scores A on the Alion truth index.
Job Title: Senior Mechanical Engineer
Location: Portsmouth Naval Base - working a hybrid pattern
We offer a range of hybrid and flexible working arrangements - please speakto your recruiter about the options for this particular role.
Salary: Circa £50,000 dependent on experience
Who we are:
Join BAE Systems and you’ll be part of something bigger. As a valued member of our global colleague network, you’ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. You’ll 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, there’s no limit to where a career at BAE Systems could take you.
Role description:
As a Senior Mechanical Engineer, you will deliver key WTA (Warship Technical Authority) service elements across naval platform systems, including design change, technical assurance, material state and obsolescence management, specialist engineering support, and future support or transformation planning.
Core duties:
- Providing advanced mechanical engineering support across diverse naval platform systems, equipment, and critical marine services
- Clarify and manageplatform system requirements, working with internal teams and external stakeholders
- Delivering systems design integrity across varied engineering contexts, classes, and programme deployments
- Delivering investigations, impact assessments and integration analysesto enable evidence-based technical decisions
- Delivering safe, efficient implementation of design changes while maintaining configuration controland system integration
- Mentoring engineers and driving engineering excellence within your projects
Essential skills:
- Experienced Mechanical Engineer, IEng or equivalent, with progressing professional accreditation (e.g. IMechE)
- Broad knowledge of complexnaval platform systems, maritime defence standards and/or other highly regulated industries, (i.e. aviation, oil & gas and nuclear)
- Able to operate effectively within lifecycle management, governance, assurance and support frameworks
- Provenstakeholder engagement with MOD, navies, OEMs and industry partners; provides autonomousengineering delivery, guidance and engineer development
- Experience in at least two areas: mechanical systems design assurance, product lifecycle, requirements compliance, engineering documentation, CAD modelling/drawings, equipment design or maintenance, trials delivery (e.g. FATs), or safety case activities and documentation
The AssetManagement team:
This role sits within the Warship Technical Authority (WTA) Service Hub, part of the Asset Managementteam within Warship Support. The WTA delivers whole ship, systems and equipment engineering expertiseand change managementto ensure safe, assured and high-quality support across Warship Support programmes. The Asset ManagementTeam supports QEC, T45, T23, HUNT, OPV and international navies and delivers services such as Requirements Management, Technical Investigations, Engineering Design Authority, and Material State Management.
Why BAE Systems?
Here you’ll 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 confidenceand be empowered to be your best. You’ll be recognised for your contribution and enjoy rewards tailored to what’s 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 strongsense 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:
We’re 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 controlrestrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the rolesyou are eligible to perform within the organisation. All applicantsmustas a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicantsmusttypically 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: 17th November 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.