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.Prod