PrincipalSystemsEngineer

Smiths Detection is a global leader in threat detection and screening technologies supporting aviation, ports & borders, defence, and urban security. With 5 R&D centres, 21 global offices, and 7 manufacturing sites, our 3,000 brilliant minds have spent over 40 years at the frontline, developing solutions that protect society from explosives, prohibited weapons, contraband, toxic chemicals, and narcotics. Every minute of every day, our technology and people help make the world a safer place. 👉 Learn more about what we do: https://youtu.be/JmcKLJTrHLc We are seeking a delivery‑focused Principal Systems Engineer to act as the systems lead on a UK defence programme. This role is not focused on hands‑on mechanical or electronic design. Instead, it centres on owning requirements, verification, and compliance, and ensuring all engineering outputs align precisely with customer and regulatory expectations. You will be the person who knows the system inside out and can confidently stand behind it with customers. This role suits someone who is: * Highly detail‑oriented * Comfortable working independently * Happy spending time reading, checking, and validating documentation * Confident engaging directly with customers in a clear, factual manner You will work closely with engineering, science, test and production teams, but your focus will be on requirements, verification, and evidence, rather than active design. Responsibilities will include: * Owning system requirements and ensuring full traceability through verification * Managing and delivering the systems compliance matrix * Compiling and reviewing verification evidence across Technology * Comparing test reports, design documents and certificates against hundreds of requirements * Delivering the systems input into formal design reviews, including Critical Design Reviews * Coordinating systems engineering deliverables and schedules across the programme * Acting as a senior technical contact for the customer, providing clear