Principal Design Engineer Permanent - £65k to £70k plus excelllent benefits Location: East Staffordshire / Derbyshire border areaAre you a proven leader in mechanical and base engine design, ready to take on high-impact projects? This is your chance to work closely with a talented team in a fast-paced, innovation-driven environment, delivering solutions that raise the bar for performance and reliability.You ll take ownership of projects from concept to completion, from full engine new product introductions to rapid sprint programmes and ongoing product improvements. Using your expertise in CAD (Siemens NX or Similar), complex component design, and engineering first principles, you ll create robust, validated solutions. Expect to collaborate closely, liaise with suppliers, and mentor engineers to achieve exceptional results.What You Will Do: Lead and manage the day-to-day design engineering activities of a dynamic team.Deliver on projects ranging from full engine NPI programmes to smaller sprint programmes and current product support activities.Collaborate with internal and external stakeholders to ensure project timescales are met.Provide technical guidance, mentorship, and leadership to your team, promoting best practices.Contribute to process development and offer robust, validated engineering solutions.Work closely with analysis teams to iterate and improve designs using engineering first principles. What You Will Bring: Be experienced in design of a variety of engines/eng