Job Title: Principle Mechanical Design Engineer Location: Hertfordshire Security Clearance: Up to SC level The Role: So, what will you be doing as a Mechanical Design Engineer? Due to increased demand, we have exciting opportunities to work across the entire product lifecycle—from Mechanical Future Concepts and Detailed Design to Qualification, Production, and In-Service Support. In this role, you'll lead the development of mechanical solutions for advanced and complex weapons and weapon systems, collaborating with multidisciplinary teams to deliver cutting-edge designs. Lead the development of innovative mechanical design solutions across a variety of challenging projects. Contribute at all stages of the Product Life Cycle (CADMID), ensuring robust and reliable designs. Collaborate with diverse, cross-functional teams to address technical challenges and deliver project goals. Engage with suppliers and internal teams, fostering strong partnerships to drive project success. Ensure compliance with requirements through testing, proving, and qualification activities. What are we looking for in our next Mechanical Design Engineer? Degree, HND, or HNC in Mechanical Design or a related discipline. Proven expertise in Mechanical Design and Development in areas such as mechanisms, structures, assembly/integration, and concept development. Ability to lead mechanical design work packages and work effectively in a multi-disciplinary team environment. Awareness of structural, thermal, or dynamic analysis is a plus. 3D CAD/CAE Proficiency: Familiarity with relevant tools (training on our preferred CAE tools will be provided). Experience engaging with suppliers and managing cross-functional teams. This really is a fantastic opportunity for a Mechanical Design Engineer to progress their career. If you are interested, please apply as soon as possible as this position will be filled quickly so don't miss out If you are interested in applying for this position you must be eligible for UK security clearance up to SC level