Cross Domain SME - DV Cleared

CROSS DOMAIN SME

RATE: -700 - -850 a day
LOCATION: Preston, Lancashire
DURATION: 12 Months +
SECTOR: Defence & CNI
CLEARANCE: Active DV Required

THE OPPORTUNITY
We are working exclusively with a globally recognised prime defence contractor to identify a subject matter expert in Cross Domain Solutions (CDS) for a complex, high-assurance programme based in Preston. This is a senior, technically demanding role at the heart of a programme operating across multiple security domains and classification levels.
You will provide deep technical expertise across the design, implementation, and assurance of cross domain transfer mechanisms - working closely with architects, security teams, and accreditors to ensure solutions meet the stringent requirements of a highly classified defence environment.

WHAT YOU''LL BE DOING

• // Acting as the programme''s technical authority on all Cross Domain Solution matters
• // Defining and owning CDS architecture, design patterns, and security controls
• // Leading the evaluation, selection, and integration of accredited CDS products and technologies
• // Working with security architects and accreditors to achieve and maintain system accreditation
• // Providing SME input to risk assessments, HMG/MOD security reviews, and technical audits
• // Developing and reviewing CDS-related security documentation (RMADS, SyOps, TRA)
• // Advising on data guard design, content filtering, and information flow policy enforcement
• // Liaising with NCSC, DSTL, and other government bodies as required by the programme
• // Supporting transition and integration activity across classification boundaries

// WHAT WE''RE LOOKING FOR

• // Active, current Developed Vetting (DV) clearance - non-negotiable
• // Demonstrable SME-level expertise in Cross Domain Solutions within a UK defence or government environment
• // Deep understanding of HMG information assurance policy, JSP 440, JSP 604, and SPF requirements
• // Hands-on experience with accredited CDS products (e.g. Nexor, Owl, Forcepoint, or equivalent)
• // Strong understanding of data guard architectures, content inspection, and policy enforcement engines
• // Familiarity with MOD/DSTL accreditation and risk management processes (RMADS, ISO 27001)
• // Experience producing and reviewing security case documentation for high-classification systems
• // Ability to engage credibly with senior stakeholders, accreditors, and government technical authorities
• // Prior experience on UK defence programmes at SECRET or above is highly desirable