Propulsion Systems Principal Engineer Derby About the role: Working within a dynamic engineering-focused team, you will be accountable for the end-to-end engineering activities (development, delivery, and launch) relating to in production support of our current diesel engine products. You will work as a Prinicpal in a close knit team responsible for multiple engine systems, completing all problem counter measure activities and feeding this learning into the concepts for new product. (Both Hydrogen and Diesel) You will need to support and liaise with internal and external stakeholders, plan and control the systems project progress, manage the resource within your team, offer technical guidance and direction, provide mentorship and leadership, contribute to process development and the overall direction of the team. You will report directly into the Mechanical Systems team manager. What does this role involve day to day? • Lead the end-to-end engineering activities for in-production diesel engine support, including development, delivery, and launch. • Manage a team responsible for multiple engine systems, ensuring timely resolution of technical issues and feeding learnings into new product concepts (Hydrogen and Diesel). • Liaise with internal and external stakeholders, manage project progress, allocate resources, and provide technical direction and mentorship. • Contribute to process development and continuous improvement within the Mechanical Systems team. • Report directly to the Mechanical Systems Team Manager. This will be suited to you if: • You have a degree in Mechanical Engineering or a related discipline, with strong engineering fundamentals and attention to detail. • You’ve led multiple engine programmes from concept through to production, ideally including medium-duty diesel engines. • You’re experienced in leading teams and managing delivery responsibilities, with excellent communication and documentation skills. • You have a confident understanding of the design, development process, and be able to problem-solving complex engine components and systems such as crankshafts, valvetrain, cooling systems, lubrication systems, and more. • You have an understanding of FEA, CFD, and combustion simulation tools, and can work effectively with analysis teams. • You’re commercially aware and experienced in supplier management. • You thrive under pressure and are passionate about delivering robust, validated engineering solutions