About The Role Senior Mechanical Engineer Westhill, Aberdeenshire Full-Time, Permanent About Us JFD is the world leading underwater capability provider, serving the commercial and defence markets with innovative diving, submarine and hyperbaric rescue, technical solutions and services. Operating worldwide, the company is the world’s leading provider of submarine rescue capability and an established provider of submarine escape training. The company is at the forefront of Hyperbaric Rescue, along with being the leading supplier of commercial and defence diving equipment and saturation diving systems to the commercial industry. The Role To provide engineering design solutions and through life engineering 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 or change equipment in the field. This role ensures design integrity, and delivering high-quality engineering solutions that meet performance, safety, and manufacturing standards. Due to the requirements of this role, all candidates must be able to obtain UK Security Clearance. Principle Accountabilities Lead robust solutions to complex mechanical design challenges Conduct detailed design and stress analysis of pressure vessels and structures using classical methods and FEA Develop and maintain high-quality technical documentation to support engineering design and manufacturing Deliver end-to-end mechanical system designs, from concept and schematics to full engineering release Ensure all designs comply with relevant codes, legislation, and Pressure Equipment Regulations Collaborate with classification bodies (e.g., Lloyd’s Register, DNV) to secure design approvals Review and approve engineering drawings and specifications for accuracy and compliance Supervise and mentor engineers and draughtsmen in producing detailed technical documentation Liaise with clients and subcontractors to understand requirements and provide effective technical solutions Manage engineering deliverables to meet project timelines, budgets, and quality standards Knowledge, Qualifications And Experience Advanced pressure vessel design expertise using PD5500, ASME VIII, and EN 13445, with proficiency in both design-by-rule and design-by-analysis methods Skilled in FEA using ANSYS Workbench, and experience with SolidWorks, MathCAD, Finglow, and PLM systems Strong understanding of pressure vessel manufacturing techniques and engineering change processes Knowledge of Class Society rules (e.g., Lloyd’s, DNV) and industry standards such as IMCA, particularly in diving, marine, and lifting applications Proven ability to produce high-quality, detail-oriented technical documentation and collaborate effectively with clients, subcontractors, and classification bodies Holds a Mechanical Engineering degree or equivalent industry background, with practical experience in pressure vessel engineering and dive systems would be advantageous A proactive and adaptable team player with strong communication and organisational skills, who takes ownership, solves problems with initiative, and consistently delivers high-quality results under pressure Willingness to travel overseas If this sounds like the ideal next step in your career, then click ‘apply’ now! You can find out more about James Fisher & Sons group companies and valued behaviours by watching a short film here: We are One James Fisher - YouTube 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. For more information Click here About You About Us Not Specified Apply Share Share Vacancy on Facebook Share Vacancy on X Share Vacancy on LinkedIn Share Vacancy on WhatsApp Send Vacancy to a friend