Principal Electro-Mechanical Engineer – Electric Machine & Motors

Principal Electro-Mechanical Engineer – Electric Machine & motors

Permanent

Greater Norwich Area

ARCA is proud to partner with an innovative engineering organisation at the forefront of next- electric propulsion technology. This pioneering company is developing advanced electric machine solutions that are shaping the future of high-performance, efficient propulsion systems. As part of continued growth, they are seeking an experienced Principal Mechanical Engineer to play a leading role in the development of cutting-edge electric motor technology from concept through to production readiness.

This is an outstanding opportunity for a senior engineer with deep expertise in electric machine mechanical design, thermal management, and validation to join a highly collaborative and technically ambitious engineering environment.

As Principal Mechanical Engineer, you will take ownership of the mechanical and thermal design of advanced electric motors, ensuring robust, manufacturable, and high-performing solutions capable of operating reliably in demanding real-world environments. Working closely with multidisciplinary engineering teams across electromagnetic, controls, manufacturing, and testing, you will drive the full development lifecycle - from early-stage concept design through analysis, testing, validation, and transition into production.

• Lead the mechanical design and physical integration of electric machines
• Design high-speed rotor systems including magnet selection, placement, and retention strategies
• Develop robust shaft, bearing, and housing solutions
• Define and implement air-cooled thermal management strategies
• Integrate stator windings, insulation systems, flux rings, and sensing solutions
• Conduct and guide mechanical, thermal, vibration, and tolerance analysis
• Lead FMEA activities, root cause investigations, and design robustness reviews
• Define and oversee structured validation and verification plans
• Review and interpret test data to drive continuous design improvement
• Ensure designs are manufacturable, scalable, and cost-effective
• Support customer and stakeholder discussions with clear technical communication

• Proven experience in electric machine design with a strong focus on mechanical and thermal engineering
• Motor experience
• Extensive experience designing rotor systems for high-speed operation
• Strong understanding of magnet retention methods and stator integration
• Experience with motor build, testing, and validation activities
• Knowledge of air-cooled thermal management systems
• Experience leading FMEA and failure analysis processes
• Familiarity with mechanical and thermal simulation/analysis tools
• Strong understanding of materials used in electric machines, including electrical steels, magnets, and conductors
• Ability to balance performance, durability, manufacturability, and cost considerations
• Excellent communication and problem-solving skills
• Degree qualified in Engineering or equivalent professional accreditation

This is an exciting chance to join a forward-thinking engineering organisation developing next- propulsion technologies with real-world impact. You’ll work on technically challenging projects within a collaborative environment that values innovation, quality, and engineering excellence.

If you are a passionate mechanical engineer looking to take a leading role in advanced electric motor development, we would love to hear from you.

Apply now for immediate consideration