OT Architect - DV Cleared

CBSbutler Holdings Limited trading as CBSbutler
Preston, United Kingdom
Last month
Applications closed

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SOC Analyst

Cadent Ansty, Warwickshire, United Kingdom
Posted
9 Mar 2026 (Last month)
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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

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