We're looking for a reliable, experienced Security & Infrastructure Engineer (3–7 years in IT, cloud and security) to join our growing defence AI company in central Oxford, helping our teams stay productive, cyber-compliant and protected as we scale. We develop and deliver mission-critical uncrewed aircraft subsystems, so reliability, problem solving skill and adaptability really matter.

This role sits at the intersection of IT operations, cloud infrastructure, and cyber security.

You will work closely with a fractional Security Lead, deputy CTO, COO, IT manager plus other external CISO and consultants as relevant. You will be supporting delivery of a structured security programme while ensuring day-to-day systems remain secure, reliable, and efficient.

This is a hands‑on role suited to someone who enjoys both solving operational IT issues and implementing modern security controls in a fast‑paced, high‑assurance, advanced environment. You will play...