I’m supporting a key Defence partner with a 6‑month contract for an on‑site Security Subject Matter Expert in Corsham. This role sits at the heart of a high‑assurance environment, working closely with MOD stakeholders and providing end‑to‑end security assurance across systems, applications, and infrastructure.Key details:

Location: Corsham (Onsite)

Clearance: DV + additional clearances (UK‑only nationals incl. spouse)

Rate: £500-600 p/d outside IR35

Length: 6 months

What you’ll be doing:

Acting as the on‑site security authority alongside MOD

Providing full security assurance and formal sign‑off

Reviewing security architecture & technical designs

Overseeing SIEM, monitoring, and forensic readiness

Leading and assessing penetration testing & vulnerability work

Approving secure code reviews and release changes

Assessing software suppliers and product risks

Producing clear, auditable sec...