Principal Mechanical Engineer

Principal Mechanical Engineer – Complex SystemsWe are working with a highly innovative engineering company seeking a Principal Mechanical Engineer with a proven track record in designing, developing, and delivering complex, multi-component mechanical systems. This is a senior, hands‐on role for an engineer who has previously operated at a principal or senior engineering level, combining technical ownership, design leadership, and mentoring responsibilities.

This position will lead across the full product lifecycle, including concept development, 3D CAD modelling, assemblies, FEA/structural analysis, prototyping, testing, and production release, while setting engineering standards and supporting the development of other engineers.

Key Responsibilities

Lead the end‐to‐end mechanical design of high‐spec, multi‐part systems, ensuring solutions are robust, reliable, and manufacturable

Provide technical ownership and direction across projects, including design strategy, risk mitigation, and problem‐solving

Mentor and support other mechanical engineers, driving best practice, design reviews, and engineering standards

Produce and maintain high‐quality technical documentation, including CAD models, detailed drawings, BOMs, design calculations, and test reports

Collaborate closely with cross‐functional teams including electronics, software, and systems engineering to deliver integrated solutions

Balance your own hands‐on design work with reviewing and guiding wider project deliverables

Essential Experience

Proven experience at a Principal or Senior Mechanical Engineer level, delivering complex, high‐spec mechanical systems

Expertise in full lifecycle mechanical engineering from concept, design, FEA/structural analysis, prototyping, testing, and production handover

Strong experience in 3D CAD modelling and assemblies (e.g., Creo, SolidWorks, Catia, Autodesk Inventor)

Experience with PLM systems (Teamcenter, Windchill, or similar) and managing BOMs, drawings, and technical documentation

Knowledge of manufacturing processes, DFMA, tolerance analysis, and design for reliability

Proven track record of mentoring engineers, leading design teams, and setting engineering standards

Hands‐on, practical approach with problem‐solving, troubleshooting, and innovation in complex mechanical assemblies

Desirable

Experience in sectors such as defence, aerospace, offshore, renewable energy, industrial machinery, or high‐precision systems

Familiarity with mechanical testing, prototyping, verification, and validation processes

Comfortable delivering results in fast‐paced, project‐driven environments with tight deadlines and budgets

Why ApplyThis is a rare opportunity to combine technical leadership with hands‐on mechanical engineering ownership, shaping the design of complex systems while mentoring other engineers. You will play a key role in taking product to the next level of conception, creating a fully tested, operational system.

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