GTS Group Ltd
Principal Mechanical Engineer

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Principal Mechanical Engineer – Rolling Stock
Derby (Hybrid)
Up to 75k + Package
Overview
We are seeking an experienced Principal Mechanical Engineer to provide technical leadership across rolling stock mechanical systems, supporting modifications, upgrades, new-build programmes, and consultancy projects within the rail industry. The role requires strong technical expertise, client engagement skills, and the ability to lead multidisciplinary engineering activities in safety-critical environments.
Key Responsibilities
Technical Leadership
- Act as Technical Authority for systems including bogies/running gear, couplers, doors, interiors, HVAC, brakes, structures, and wheelsets.
- Develop and approve engineering strategies, calculations, analyses, and technical documentation.
- Lead modifications, retrofits, upgrades, and testing activities for new and legacy fleets.
- Oversee validation activities including type tests, installation checks, and static/dynamic trials.
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Project Delivery & Governance
- Deliver engineering work to agreed time, cost, and quality targets.
- Support bidding and estimating activities, producing accurate and competitive proposals.
- Prepare technical reports, design reviews, safety cases, and assurance documentation.
- Ensure compliance with relevant rail standards and regulations including EN/BS, RIS/GMRT, and TSIs.
Client & Commercial Engagement
- Support consultancy proposals and bid submissions.
- Build strong relationships with clients, suppliers, and industry stakeholders.
- Represent the business at technical meetings and industry forums.
- Identify innovative solutions aligned to client needs.
Leadership & Continuous Improvement
- Mentor and support junior engineers.
- Review and approve technical work.
- Drive continuous improvement in engineering processes and quality standards.
- Maintain awareness of emerging technologies, standards, and industry best practice.


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Essential Skills & Experience
- 10+ years’ experience in Rolling Stock Engineering.
- Degree-qualified in Engineering or relevant STEM discipline.
- Chartered Engineer (CEng) or working toward chartership.
- Proven experience delivering projects in safety-critical environments.
- Strong technical report writing, communication, and presentation skills.
- Experience preparing technical proposals and supporting bids.
Desirable Skills
- Experience with UK rolling stock modifications and upgrades.
- Knowledge of RAMS, FMEA, FTA, HAZOP, and safety assurance processes.
- Familiarity with TSIs, RIS/GMRT, ORR interfaces, and approval processes.
- Experience reviewing CAD/PLM and CAE outputs (e.g., CATIA, SolidWorks, ANSYS).
- Understanding of reliability, maintainability, and whole-life cost principles.
- Commercial awareness and leadership experience.
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