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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Key Responsibilities

• 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

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

Essential requirements

• 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

Desirable

• 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

Security Clearance

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. 

Inclusion & Diversity

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 talent@ukaea.uk. All appointments are made on merit.

UK Atomic Energy Authority is committed to being accessible. Please email talent@ukaea.uk if you have any questions or require help or adjustments to compete on a fair basis, for example, changes to the way we interview or share information.  

Benefits

A full list of our benefits can be found here https://careers.ukaea.uk/life-at-ukaea/employee-benefits/