Principal Mechanical Design Engineer – Hybrid

Principal Mechanical Design Engineer – Near Edinburgh (Hybrid)

Lorien is supporting their longstanding, highly regarded and Scottish‑born client in the search for a Principal Mechanical Design Engineer to join its product development team. This is a senior‑ranking opportunity for someone who enjoys leading complex design work, shaping technical direction, and working across multidisciplinary projects in a precision‑led environment.

• Provide technical leadership on complex mechanical design projects including new technologies and product improvements from concept through to release.
• Set direction on design approach, lead system‑level architecture, and embed engineering best practice across the wider team.
• Work closely with colleagues across engineering, manufacturing, quality, and supply chain to deliver robust solutions.
• Support prototype development, testing, and product validation activities.
• Lead design reviews, problem‑solving activities, and continuous improvement initiatives.
• Oversee technical documentation, drawings, and engineering standards to ensure quality and compliance.
• Use analysis, modelling, and experimental data to guide design decisions.
• Mentor other engineers and contribute to capability building within the team.
• Help shape future development plans by contributing ideas for new technology and product improvement.

• A strong background in mechanical design within a complex engineering environment, including system‑level architecture, technical strategies and approaches.
• Degree‑qualified/equivalent industry record in Mechanical Engineering or a related discipline.
• Record of leading technically challenging projects involving multiple stakeholders and disciplines.
• Strong understanding of CAD, engineering drawings, tolerance control, and Design for Manufacture/DfX principles.
• Confidence in validation, testing, root cause analysis, and structured problem solving.
• The ability to influence technical decisions, support others, and communicate effectively at all levels.
• Exposure to regulated, high‑specification, or precision engineering environments would be advantageous.
• A proactive mindset with a focus on quality, continuous improvement, and delivering practical engineering solutions.

This is an excellent opportunity to join an established business where you can make a genuine impact at a senior level. If you're looking for a role that combines hands‑on engineering depth with technical leadership and cross‑functional influence, we'd be keen to hear from you. In return, you'll join a supportive organisation well versed in keeping their staff happy plus a generous bonus scheme, hybrid working model plus flexible start/finish times, annual salary reviews, plenty of opportunities to upskill and progress professionally, and a range of other benefits (that they've recently added to again) designed with employee happiness in mind.