OT Cyber Security Lead

Within the Computing Division, the Enterprise Infrastructure Solutions (EIS) unit delivers and operates enterprise IT and cyber security services across UKAEA.

As OT Cyber Security Lead, you will provide technical leadership for the design, implementation, and continuous improvement of OT cyber security across safety‑critical environments.

You will act as the technical authority for OT security, ensuring controls are risk‑based, proportionate, and aligned with recognised standards (IEC 62443, NIST CSF, CAF, ISO 27001).

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• Act as design authority for OT network security architectures (segmentation, zoning, IT/OT boundaries, air‑gapping)
• Provide independent assurance balancing cyber security, safety, and operational availability
• Define and assure OT security controls (e.g. firewalls, remote access, monitoring, SOC/SIEM integration)
• Lead OT cyber risk management and incident response activities
• Own and evolve OT cyber security strategy, standards, and capability
• Collaborate across engineering, operations, and enterprise security teams

£57,117 (inclusive of Specialist Allowance) + excellent benefits including outstanding pension

We are looking for candidates who combine strong technical capability with the ability to engage effectively across multidisciplinary teams.

• Degree or equivalent experience in cyber security, engineering, networking, or related field
• Experience of OT/ICS security within industrial or critical infrastructure environments
• Strong understanding of OT security frameworks (IEC 62443, NIST CSF, CAF, ISO 27001)
• Experience in OT risk assessment and network security (segmentation, industrial protocols)
• Ability to communicate technical concepts clearly and influence across teams
• Experience integrating OT with SOC/SIEM
• Familiarity with OT asset discovery tools
• Knowledge of critical infrastructure regulation (e.g. NIS, CAF)
• Experience with ITSM / service delivery frameworks

This role requires BPSS and eligibility for SC clearance (must have resided in the UK for the last 5 years). The Disclosure & Barring Service (DBS) checks for criminal convictions and possibly a search of open source data.

UKAEA’s mission is clean energy for all and that starts with building a workforce that reflects the society we serve.

We welcome applications from all backgrounds and communities. We particularly encourage applications from people who are under‑represented in STEM, including women and people from Black, Asian and minority ethnic backgrounds.

We recognise that not everyone will meet every requirement listed. If you are interested in this role and believe you have relevant transferable skills or experience, we encourage you to apply.

We are committed to a fair and inclusive recruitment process. If you need any adjustments or support at any stage, please contact us at  All appointments are made on merit.

As an employee of UKAEA you will benefit from:

• Outstanding defined benefit pension scheme, details of which can be found at the end of this advert.
• Corporate bonus scheme up to 7% and a Relocation allowance (if eligible).
• Flexible working options including family friendly policies.
• Employee Assistance Programme and trained Mental Health First Aiders.
• Generous annual leave allowance starting with 25 days, plus 3 days Christmas closure and 2.5 privilege days, in addition to UK bank holidays.
• A vibrant culture committed to equality and being fully inclusive.