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Permanent

Principal Mechanical Design Engineer

Marcus Webb Associates Limited
Farnborough
money-bag £65000 - £80000/annum Pension, Health, Hols, Bonus
Posted: 03 July 2026 (Today)
Closing date: 19 July 2026
Ref: 225272331

Principal Mechanical Design Engineer – Electric Motors
Farnborough, UK

Up to £80,000 + bonus

If you are a highly technical mechanical design engineer with high volume automotive experience looking to take on a leadership role and drive innovative projects from concept to production, we would love to hear from you.

We are seeking a highly technical Principal Mechanical Design Engineer to join a team of highly skilled engineers; leading mechanical technical decisions, issue resolution and major projects with a high level of autonomy.

This is a second-in-command position, responsible for managing and mentoring a group of experienced engineers.

Key Responsibilities: Principal Mechanical Design Engineer

  • Lead technical decisions and resolve engineering issues on complex motor projects both next generation and existing.
  • Contribute as a technical authority to high voltage, high power design applications where insulation coordination, creepage and clearance, dielectric withstand and isolation requirements are critical design considerations.
  • Drive projects from concept through to productionisation, including sample design, prototyping and validation.
  • Champion technical excellence within the team, mentoring senior and junior engineers.
  • Oversee and carry out FEA, CFD and hand calculations on motor components and systems.
  • Implement cost reduction and design simplification strategies.
  • Manage supplier and high-volume manufacturing challenges - high pressure/low pressure die casting, injection moulding and stamping etc.

Key Requirements: Principal Mechanical Design Engineer

  • A degree in mechanical engineering, automotive engineering or similar coupled with strong practical skills
  • Proven high volume automotive experience (non-negotiable), ideally with a tier one or OEM
  • Proven experience as a Principal / Lead mechanical design engineer working on dynamic, high voltage electromechanical systems from concept to production (3D, 2D, DFM, GD&T, BOMs etc)
  • Strong knowledge of high voltage electromechanical design - insulation coordination, creepage and clearance, dielectric withstand and isolation requirements
  • Ability to lead technical projects and teams of mechanical design engineers from product concept through NPI and into production
  • Strong experience in the design of Motors, Transmissions, Gear systems, Bearings, Engines, Pumps, powertrain, drivetrain or other dynamic or rotating equipment is required
  • Good understanding of metallic materials and manufacturing processes – HP/LP die casting, machining, pressing etc
  • Use of high-end mechanical design systems (SolidWorks, Creo, Catia etc)
  • Candidates should be good problem solvers, creative, self-motivated, methodical, focused and with a flexible attitude

What’s on offer: Principal Mechanical Design Engineer

  • Exciting, varied projects including ground-up new product development
  • A collaborative, technical team environment
  • Opportunity to make a significant impact in an innovative, scaling automotive business
  • Excellent benefits including pension, private health care, life assurance, holiday, bonus, relocation and financial support with L&D

Commutable from Farnborough, Farnham, Winchester, Basingstoke, Guildford, Leatherhead, Petersfield, Reading

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