Mechanical Engineer jobs in United Kingdom

About the Role

Senior Mechanical Engineer
Full-time, permanent
Westhill, Aberdeenshire

Please note that this role requires security checks.

The Role: To provide engineering design solutions and through life engineering and service support to the JFD product range and systems, working as a technical lead for the engineering team, workload can vary from new product design to meet client or internal specifications through to supporting an existing client’s request to upgrade, change or support equipment in the field.

This role ensures design integrity, and delivering high-quality engineering solutions that meet performance, safety, and manufacturing standards.

• Provide engineering design input for new and existing systems and products, while supporting the current product/systems range by addressing technical queries.
• Collaborate with internal departments including sales, supply chain, and production to deliver technically sound and commercially viable solutions.
• Engage with clients, suppliers, and subcontractors to offer technical guidance and ensure solutions are robust and meet specifications and project requirements.
• Create and manage part structures, part numbers, and bills of materials, while sourcing appropriate components and materials as needed.
• Generate and review engineering documentation, such as specifications, proposals, assembly instructions, test procedures, certifications, and detailed manufacturing drawings and documentation.
• Lead the implementation of design changes, ensuring updates are accurately reflected and communicated across relevant documentation and.
• Ensure engineering solutions are delivered on time and within budget, complying with internal processes and standards and external regulations.
• Act as technical approver for engineering drawings and documentation generated.
• Where applicable, potential responsibility for small team leadership, performance management, and mentoring through development plans and competency frameworks.

• Mechanical Engineering degree or equivalent industry background.
• Extensive experience in generating design calculations, specifications, procedures, certification and reporting.
• Excellent knowledge of manufacturing techniques and gas and fluid systems.
• Proficient in using Product Lifecycle Management (PLM) systems for the creation and storage of engineering documentation and packages.
• Strong understanding of engineering testing methods, including planning, execution, and analysis.
• Strong understanding of mechanical systems design and service support requirements.
• Familiarity with key design standards relevant to mechanical engineering.
• Exposure to industry codes and regulations including Lloyd’s Register, DNV, ABS, DEFSTAN, and MIL-STD would be advantageous.
• Knowledge of Pressure Vessel design skills using PD5500, ASME VIII, EN 13445 would be advantageous.
• Hands‑on experience with engineering analysis tools such as ANSYS Workbench, MathCAD, or Finglow is advantageous.
• Experience in CAD software, particularly SolidWorks or AutoCAD would be advantageous.
• Diving qualifications or knowledge of diving would be advantageous.

• Early finish on Fridays.
• Competitive salary and benefits package aligned with experience (Private Medical Insurance, Life Assurance, Cycle to Work scheme, Company Pension, etc.).
• Clear pathways for career development and organisational visibility.
• Inclusive and supportive culture that values individual contributions.
• Meaningful work with impact across safety, innovation, and global operations.

James Fisher is a global engineering services company operating across Energy, Defence, and Maritime Transport. With a strong heritage in maritime operations, we now deliver innovative solutions in challenging environments. Our One James Fisher strategy is focused on building a unified, sustainable business within the Blue Economy, driving progress through technology, expertise, and collaboration.

Visit our website at: Home | James Fisher and Sons plc

For more information about our values and behaviours, follow the link: About us | James Fisher and Sons plc

James Fisher Defence (JFD), part of the James Fisher Group, is a global leader in underwater capability, delivering cutting‑edge diving, submarine rescue, and hyperbaric solutions to both commercial and defence markets. Operating worldwide, JFD is the foremost provider of submarine rescue services and a trusted name in submarine escape training. We’re also at the forefront of hyperbaric rescue innovation and a leading supplier of advanced diving equipment and saturation systems across the industry. Explore more about JFD If this sounds like the ideal next step in your career, then click ‘apply’ now!

Due to the volume of applications, we receive for our vacancies, on occasion applications may close before the deadline, so please apply early to avoid disappointment.

James Fisher and Sons are committed to taking positive action on diversity and strongly encourage applications for candidates from all backgrounds. We are proud to be a Disability Confident employer and recognise that our success depends on our talented and diverse workforce.