Principal Mechanical Engineer

Unleash the Power of Multi-Mission Excellence:
Safeguarding the Seas for the World's Navies.

Step into a world where cutting-edge technology meets unparalleled expertise. Ultra Maritime pioneers delivering multi-mission solutions that protect and empower the naval forces worldwide. With our extensive portfolio of capabilities, our innovations are utilised on naval fleets across our allied navies around the globe.

As the maritime and underwater battlespace evolves, we tirelessly push the boundaries to develop advanced specialist systems that provide our 'five-eyes' Defence customers with an unbeatable war fighting edge. From surface vessels to sub-surface operations and unmanned platforms, we are revolutionizing the way naval missions are executed.

We thrive on collaboration and partnering with our customers to ensure mission success. Our expert solutions encompass an array of game-changing technologies, including state‑of‑the‑art sonar, radar, expendables, signature management, and naval power systems.

Join us in shaping the future of naval warfare and together, we will safeguard the seas and empower navies worldwide!

At Ultra Maritime, we understand that your personal life is just as important as your professional one. That's why we support and promote flexible working arrangements where possible. Whether you prefer a hybrid model, working remotely, or the structure of being on‑site, we will support you as best as we can.

Embrace the freedom to shape your work hours according to your needs, whether it's part‑time, compressed hours, or a unique arrangement that suits your lifestyle.

Loudwater, Greenford, and Weymouth exclusively offer a 9‑day fortnight working pattern, offering extended weekends every other week, granting you more time to pursue your passions. And that's not all – we provide flexible start and finish times, as well as Time off in Lieu (TOIL) for up to 1 day per calendar month which tie in with our Values of Integrity, Transparency and Alignment.

We welcome the challenge to work in new ways and have trust in you when getting the job done because we recognise, our business is our people.

As a Principal Mechanical Engineer and part of a multi-disciplinary team, you will:

• Define and manage mechanical architecture, system and sub‑system requirements, ensuring validation and verification.
• Develop, document, and deliver robust mechanical solutions for complex systems using our engineering toolsets.
• Create and peer‑review technical artefacts, including design documentation, data packs, analysis reports, plans, and procedures in line with our product development framework.
• Analyse and document predicted mechanical behaviours and performance.
• Develop mechanical test solutions and procedures to support product verification.
• Lead mechanical integration, verification, and acceptance testing, collecting and presenting evidence as required.
• Prepare and present technical solutions and estimates to internal and external stakeholders.
• Provide in‑service and production support to customers.
• Act as Project Engineering Lead (PEL) and/or Work Package Manager (WPM) on projects when required.
• Contribute to continuous improvement of mechanical engineering processes and tools.
• Support bids and proposals with technical input, estimates, and plans.
• Adhere to company engineering processes and procedures.
• Coach and mentor junior engineers.

Required:

• Degree‑level education or equivalent experience.
• Experience across the full project lifecycle, developing mechanical solutions against defined requirements.
• Extensive experience in mechanical design and documentation using MCAD, MCAE, PLM, and ERP toolsets (e.g., Creo, Autodesk Inventor, Windchill, IFS).
• Strong understanding of mechanical engineering principles, including material selection, assembly techniques, and manufacturing processes.
• Work package management experience.
• Experience preparing for and participating in Product Design Reviews.
• Hands‑on experience designing complex systems involving multiple engineering disciplines, with awareness of associated challenges and risks.
• Proven ability to…