OT Architect - DV Cleared
OT Architect - DV Cleared Rate: £700 - £850 a day Location: Preston, Lancashire Duration: 12 months + Clearance: UKSV Developed Vetting (DV) Work Pattern: On-site / Preston The Opportunity We are working exclusively with a globally recognised prime defence contractor to identify experienced OT Architects for a critical, long-running programme based in Preston. This is a technically demanding role embedded within a complex, highly secure programme environment supporting some of the UK's most sensitive national infrastructure. You will operate at the intersection of Operational Technology, cybersecurity architecture, and systems engineering - shaping the OT landscape across a multi-platform, safety-critical programme. The work is genuinely consequential and the technical challenge significant. What You'll Be Doing Designing and owning end-to-end OT architecture across complex, multi-domain systems Developing reference architectures, patterns, and standards aligned to programme requirements Leading OT/IT boundary definition and network segmentation design (Purdue model / IEC 62443) Providing architectural assurance and technical governance across the programme Engaging with cross-functional engineering, security, and programme leadership teams Driving OT cyber security strategy and NCSC-aligned secure-by-design principles Supporting DRACAS, configuration management, and architecture change control processes Interfacing with MOD stakeholders and contributing to technical reviews and audits What We're Looking For Active, current Developed Vetting (DV) clearance Proven background in OT architecture within a defence, CNI, or regulated industrial environment Strong familiarity with IEC 62443, NIST SP 800-82, and/or equivalent OT security frameworks Experience with SCADA, ICS, PLC, or embedded/real-time systems architecture Solid understanding of OT/IT convergence, network segmentation, and secure system design Comfortable operating within formal systems engineering environments (e.g. MBSE, DODAF, NAF) Ability to communicate complex architectural concepts to both technical and non-technical audiences Experience in safety-critical or high-integrity systems is highly desirable