OT Cyber Security Manager

Salary: £? - ? per year

Requirements:

• Proven experience in Operational Technology (OT) Cyber Security leadership roles.
• Strong knowledge of Industrial Control Systems (ICS), SCADA environments, and manufacturing and operational technology networks.
• Experience developing and implementing OT cybersecurity strategies and governance frameworks.
• Strong understanding of OT security architecture, network segmentation, and industrial protocols.
• Experience managing OT security incidents, vulnerabilities, and risk assessments.
• Knowledge of OT-focused cybersecurity frameworks and standards, including IEC 62443, NIST CSF, NIS2, and ISO 27001.
• Ability to engage with both technical and non-technical stakeholders at all levels.
• Strong leadership, communication, and stakeholder management skills.
• Desirable experience in Industrial IoT (IIoT) security.
• Desirable experience in critical national infrastructure, utilities, manufacturing, energy, or defence sectors.
• Desirable experience with cloud-connected industrial systems.
• Cybersecurity certifications such as CISSP, GICSP, CISM, or equivalent are desirable.
• Experience managing third-party security providers and regulatory engagements is desirable.

Responsibilities:

• Lead the development and execution of cybersecurity strategy across Operational Technology (OT) environments.
• Develop and maintain the OT cybersecurity strategy and roadmap aligned to business objectives.
• Establish OT security policies, standards, and governance frameworks.
• Provide expert guidance on OT cyber risk, controls, investments, and best practices.
• Lead OT cybersecurity audits and remediation activities.
• Conduct OT cyber risk assessments and vulnerability reviews.
• Identify, assess, and mitigate risks across industrial and operational environments.
• Ensure compliance with industry standards and frameworks, including IEC 62443, NIST Cybersecurity Framework (CSF), NIS2, and ISO 27001.
• Support compliance with sector-specific regulatory requirements.
• Design and maintain secure OT network architectures.
• Ensure effective segmentation between IT and OT environments.
• Review and approve OT technology deployments from a cybersecurity perspective.
• Support the secure adoption of Industrial IoT (IIoT), cloud-connected systems, and remote access solutions.
• Develop and maintain OT-specific incident response processes.
• Lead investigations and response activities for OT cybersecurity incidents.
• Coordinate with IT Security Operations, engineering teams, and third-party providers during security events.
• Monitor emerging OT threats and vulnerabilities.
• Maintain visibility of OT assets, systems, and communication networks.
• Oversee OT vulnerability management, patching, and remediation programmes.
• Ensure secure configuration and lifecycle management of industrial assets.
• Drive continuous improvement across OT security controls and operational resilience.
• Act as the primary OT cybersecurity subject matter expert.
• Partner with plant managers, engineers, maintenance teams, and IT security teams.
• Manage relationships with external suppliers, auditors, and regulatory bodies.
• Deliver security awareness programmes and promote a security-first culture across operational teams.

Technologies:

• Cloud
• IoT
• Support
• Network
• Security

More:

We are hiring an OT Cyber Security Manager for a hybrid London role with 50% onsite working. This is an inside IR35 position in a critical leadership role focused on securing industrial control systems, SCADA environments, manufacturing systems, and critical operational infrastructure. We work closely with Engineering, Manufacturing, IT, Risk, and operational stakeholders to strengthen cyber resilience, reduce risk, and ensure compliance with industry regulations and standards. Active SC clearance and sole UK nationality are required. We also ask that any suspicious outreach claiming to be from us is verified via the ManpowerGroup website.

last updated 35 week of 2026