Principal Composites Engineer

Principal Composites Engineer – Leonardo

Leonardo is establishing a new Materials and Processes Engineering Department and seeks an accomplished Principal Composites Engineer to play a pivotal role in shaping our future capabilities.

We are looking for a specialist in composites to become the organisation’s recognised authority, providing expert guidance to design teams on the selection and application of high‑performance materials and processes. You will ensure our products meet the most demanding operational requirements, focusing on manufacturability, testing, support, cost, repair and sustainability from the outset.

This position offers a unique opportunity to drive the adoption of novel composites across a wide range of product portfolios and to engage with the supply chain to support manufacturing. The role is hybrid and requires regular travel across our UK sites.

• Work with design engineers to support the design and analysis of structures using composite materials
• Engage with the supply chain to support projects during manufacture
• Develop a Composites Design Guide based on available qualified materials
• Work closely with the Materials Conformity Lead on requirements for future materials
• Support the development of the composite strategy
• Participate in knowledge sharing forums
• Work closely with the sustainability team to understand the carbon footprint of materials and the potential for material circularity
• Support Design Integrity and Airworthiness teams to ensure any new composite materials used in safety‑critical applications have undergone the required regulatory review
• Pro‑actively engage with projects across the UK to guide the efficient adoption of new composite materials and processes

• Higher education approved STEM qualification at first‑degree level or equivalent recognised by professional accreditation schemes
• A strong background in Aerospace or other high‑performance sectors
• Knowledge of a wide range of composite materials and processes
• Demonstrated experience of design and stress analysis with composite structures
• Ability to work cross‑functionally with engineering, quality, procurement and external partners
• Experience of participation in design reviews
• An enthusiasm for learning and developing knowledge in a new area of the business and an aptitude for leading the adoption of novel materials across wider engineering teams
• Willingness to represent the Company at external events

This is not an exhaustive list; the most important skill is a good attitude and willingness to learn.

This role is subject to pre‑employment screening in line with the UK Government’s Baseline Personnel Security Standard (BPSS). An additional range of Personnel Security Controls referred to as National Security Vetting (NSV) may apply, potentially including The Security Check (SC) or Developed Vetting (DV). For more information and guidance, please visit

• Time to Recharge – generous leave with the opportunity to accrue up to 12 additional flexi‑days each year
• Secure your Future – benefit from our award‑winning pension scheme with up to 15% employer contribution
• Your Wellbeing Matters – free access to mental health support, financial advice and inclusive employee‑led networks
• Rewarding Performance – all employees at management level and below are eligible for our bonus scheme
• Never Stop Learning – free access to 4,000+ online courses via Coursera and Linked In Learning
• Refer a friend – receive a financial reward through our referral programme
• Tailored Perks – spend up to £500 annually on flexible benefits including private healthcare, dental and other discounts
• Flexible working – hybrid working options; part‑time opportunities can be discussed for this role

Permanent, full‑time, hybrid with regular UK travel.

Primary location:
Edinburgh, with additional sites in Basildon, Bristol, Luton, Newcastle, and Southampton.