Principal Mechanical Engineer Salary: Up to £75,000 per annum Location: Near Addlestone, Surrey Hours: 37.5 hours per week Type: Permanent Are you a recognised Mechanical Engineering expert looking for a role where your technical decisions genuinely shape projects, products, and business performance? We’re supporting a highly innovative engineering business in the defence sector in their search for a Principal Mechanical Engineer (Mechanical SME) to act as the organisation’s go-to Subject Matter Expert across all mechanical engineering matters. This is a high-impact position focused on technical excellence, governance, problem-solving, and innovation rather than people management—ideal for someone who wants to remain hands-on technically while influencing engineering strategy across multiple programmes. What’s in it for you? * Salary up to £75,000 depending on experience, Paid overtime or time off in lieu * Flexible working hours with core hours in place, Competitive employer pension contribution, Private medical care, Holiday closedown over Christmas * Ongoing training and development, Salary sacrifice schemes, Company laptop / mobile / home office equipment * Relocation package available for the right candidate Security / Eligibility Requirements – Please Read Before Applying Due to the nature of the work and security clearance req...