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 (eg 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