Are you an experienced Mechanical Development Engineer looking for your next challenge? This is an exciting opportunity to join a growing engineering team and play a key role in developing innovative, high-quality mechanical products from concept through to production. Looking for a motivated and detail-oriented Mechanical Development Engineer to lead the mechanical design and development of sensor-based products. You will be responsible for delivering cost-effective, manufacturable designs that meet both customer and internal specifications. This role involves full product lifecycle management - from initial concept and prototyping through to documentation, supplier engagement, and supporting production teams. Key responsibilities for the Mechanical Development Engineer based in Northants: Lead mechanical design and product development activities, collaborating closely with electronics engineers. Produce and test prototypes as required. Create and manage technical documentation including BOMs, drawings, datasheets, FMEAs, technical files, and compliance documents. Manage projects to agreed timescales, budgets, and specifications. Maintain technical ownership of designs throughout the lifecycle, supporting production and customer delivery. Apply design-for-manufacture and cost-control principles without compromising on quality. Liaise with external suppliers and identify new supply partners when necessary. Support the design or sourcing of bespoke tooling for assembly processes. Produce clear assembly instructions for production teams. Set up parts within ERP systems. Ensure compliance with ISO requirements and internal processes. Key skills required for the Mechanical Development Engineer based in Northants: Degree in Mechanical Engineering, Mechatronics, or a related field. Extensive experience in a mechanical design or engineering development environment. Proven track record of delivering products from concept through to market launch. Experience in prototyping, testing, and validation. Proficiency with 3D CAD (SolidWorks preferred). Knowledge of injection moulding, CNC machining, and sheet metal design. Strong computer literacy (Microsoft Office/365/Teams, ERP systems). Excellent communication skills, both written and verbal. Highly self-motivated with the ability to manage multiple projects independently. Strong attention to detail with a 'right first time' approach. Ability to work at pace and take initiative when faced with design challenges. Benefits 27.5 days annual leave bank holidays Private medical insurance Bonus scheme Pension Death benefit & income protection The position is for a senior Mechanical Development Engineer who thrives in a fast-paced environment, is confident working independently, and enjoys taking full ownership of mechanical design projects. APPLY NOW! To apply for the Mechanical Development Engineer based in Northants, please send your CV to, or for more information contact Mike Belmar on 01582 878807 or 07961 158782.