Job Specifications
OT Architect - Operational Technology Architect
DV OR SC Cleared Considered - OT Architect - 6 months - £700p/d - Outside IR35 - 3 days onsite
About the role
The Operational Technology (OT) Architect is responsible for defining, designing, and governing the architecture of industrial and operational systems that control and monitor physical processes. This role ensures OT environments are secure, resilient, interoperable, and aligned with business, safety, and regulatory requirements, while enabling convergence with IT and cloud platforms where appropriate.
The OT Architect acts as a technical authority across industrial control systems (ICS), SCADA, and IIoT, providing strategic direction and hands-on architectural leadership.
Key Responsibilities
OT Architecture & Strategy
Define and maintain OT architecture principles, standards, and reference designs
Design end-to-end OT solutions covering control systems, networks, data flows, and integrations
Support long-term OT roadmaps, modernization initiatives, and IT/OT convergence
Ensure architectures meet safety, availability, and operational resilience requirements
Industrial Systems & Platforms
Architect solutions across ICS, SCADA, DCS, PLCs, and HMIs
Support integration of OT systems with enterprise IT, cloud, and data platforms
Define standards for industrial protocols (e.g. Modbus, OPC UA, DNP3, IEC 61850)
Enable secure adoption of IIoT and edge computing technologies
OT Cyber Security & Risk
Embed security-by-design into OT architectures
Define OT network segmentation, zoning, and access controls (Purdue Model / IEC 62443)
Conduct risk assessments, threat modeling, and architecture assurance reviews
Support compliance with safety and security regulations and standards
Reliability, Safety & Performance
Design for high availability, fault tolerance, and disaster recovery in OT environments
Ensure architectures support real-time performance and operational continuity
Align designs with functional safety and operational risk requirements
Support incident response and recovery planning for OT systems
Governance & Stakeholder Engagement
Act as the OT technical authority for projects and programmes
Collaborate with engineering, operations, IT, cyber security, and vendors
Review designs, vendor solutions, and system changes for architectural compliance
Produce clear architecture documentation, standards, and guidance
Required Skills & Experience
Technical Skills
Strong experience with OT and industrial control system architectures
Deep understanding of ICS/SCADA/DCS environments
Knowledge of industrial networking and protocols
Experience with OT cyber security principles and standards
Understanding of IT/OT integration and data flows
Professional Experience
Experienced in OT, industrial engineering, or architecture roles
Proven experience designing or governing OT architectures in complex environments
For more information and immediate consideration please apply today. Immediate interviews available.
About the Company
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