OT Cyber Security Consultant

DGH Recruitment are currently recruiting on behalf of a leading client in the Accountancy industry who require an Operational Technology Cyber Security Consultant to join the firm in London.

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• Conduct OT and industrial control system (ICS) security risk assessments across operational assets and supporting systems.
• Develop and refine cyber security requirements to support OT systems design and security arrangements used to protect OT systems at supply chain and nuclear operations stages.
• Carry out security assurance activities to confirm adequacy of security arrangements used by Supply Chain to develop OT systems or by Asset owners that operate OT systems.
• Evaluate system architectures, network segmentation, and security controls for SCADA, DCS, and Control & Instrumentation systems.
• Support clients in aligning with regulatory and industry requirements, particularly within the civil nuclear and critical infrastructure sectors.
• Contribute to security cases, safety justifications, and security assurance documentation.
• Collaborate with multi-disciplinary teams including engineering, safety, IT, and compliance specialists.
• Support internal capability development, including the creation of OT security frameworks and training materials.

• Approximately 5 years’ experience in OT/ICS cyber security or C&I system engineering, including security risk management.
• Familiarity with control system architectures (PLC, DCS, SCADA) and industrial network protocols.
• Experience performing or supporting cyber risk assessments, system security evaluations, or vulnerability analysis.
• Working knowledge of applicable standards (IEC 62443, NCSC CAF, ISO 27001/27019, NIST 800-82).
• Strong writing and communication skills able to translate technical findings into clear, actionable recommendations and specifications.
• Eligible for UK Security Clearance (SC) or already holding clearance.

Mid-Senior level

Full-time

Information Technology

Accounting