Principal Mechanical Design Engineer

We are seeking an experienced Principal Mechanical Design Engineer to play a pivotal role in the development of innovative electromechanical and power generation technologies for next‑generation aerospace applications.

This role is ideal for a technically strong engineer who enjoys design authority, work‑package leadership and hands‑on problem solving, while also mentoring others and influencing project direction.

The Role

You will lead and deliver robust mechanical design solutions across R&D, R&T and product development programmes. Working within a multi‑disciplinary engineering environment, you will take ownership of complex work packages, ensuring designs meet performance, manufacturing, cost and weight targets while complying with rigorous aerospace standards.

You’ll work closely with stress, thermal, validation, industrialisation, quality and supply chain teams, providing technical leadership and design assurance from concept through to product maturity.

Key Responsibilities

Lead the development of mechanical design solutions for electromechanical and power generation products Own and deliver engineering work packages, ensuring technical robustness, schedule adherence and cost targets Create, review and approve 3D CAD models, drawings and bills of materials in line with company standards Produce and review design assurance documentation, including calculations, reports, test procedures and analyses Support design investigations, root‑cause analysis and risk reduction activities to mature products and concepts Act as a technical authority, supporting design reviews and approving solutions produced by other engineers Interface across disciplines including mechanical, stress, thermal, V&V, industrialisation, configuration and quality Provide technical guidance, mentoring and informal leadership to engineers within the project team Support project reporting, milestone delivery and KPI achievement Degree in Mechanical, Automotive or Aeronautical Engineering (or equivalent experience) Strong experience delivering mechanical design work packages in a regulated engineering environment Proven background in rotating machinery (shafts, bearings, seals, housings, structures) Solid understanding of engineering materials and manufacturing methods Substantial experience using 3D CAD tools for electromechanical design Strong written and verbal communication skills Ability to plan, prioritise and deliver work under tight project deadlines