Job Title: Senior Mechanical Design Engineer Location: Peterlee Salary: £45,000 - £50,000 per annum (Depending on experience) Job type: Full time, Permanent Working Hours: 37.5 hours per week - 08:30-17:00 M-T and 08:30-14:00 F We are seeking an experienced Senior Mechanical Design Engineer to join our growing engineering team in Peterlee. The successful candidate will take technical ownership of mechanical design for advanced battery pack assemblies, leading the full design cycle from concept to production release. This role requires a solid foundation in SolidWorks, plastic injection moulded component design, and thermoplastic material selection, combined with a strong understanding of design for manufacture (DFM) and design for assembly (DFA) principles. You will play a key part in the development of innovative, robust, and cost-effective mechanical solutions for battery systems used across demanding industrial, automotive, and mobility applications. The role includes technical mentoring and day-to-day management of two junior design engineers. Main Duties and Responsibilities: The below list is not exhaustive, but the main duties and responsibilities will be: Lead the mechanical design and development of custom lithium-based battery systems, including enclosures, structural housings, interconnects, cooling components, and mounting solutions. Design injection-moulded plastic components and metal fabricat...