Senior Mechanical Engineer

Job Title: Senior 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 £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 platform systems, including design change, technical assurance, material state and obsolescence management, specialist engineering support, and future support or transformation planning.

Core duties:

• Providing mechanical engineering support across diverse platform systems, equipment, and critical marine services
• Delivering engineering input to multiple projects, including CSM platforms and international naval programmes
• Working with internal teams and external stakeholders to clarify and manage platform system requirements
• Maintaining systems design integrity across varied engineering contexts, classes, and programme deployments
• Supporting investigations, impact assessments and integration analyses to enable evidence-based technical decisions
• Ensuring safe, efficient implementation of design changes while maintaining configuration control and system integration

Essential skills:

• 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 equipment’s
• You will be an experienced professional engineer at CEng level or equivalent level of capability
• You provide effective technical guidance and influence, supporting engineers with technical oversight, clarity of direction, and opportunities for 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.

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 confidence and 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 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:

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 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: 18th August 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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