OT Cyber Security Analyst

Salary: £? - ? per year

Requirements

• Previous experience within OT/ICS or critical infrastructure environments
• Background within sectors such as oil and gas, rail, utilities, manufacturing, or chemical processing
• Strong understanding of OT security frameworks including IEC 62443, NIST CSF, CAF, and ISO 27001
• Experience implementing OT security strategies, controls, and standards
• Knowledge of industrial networks, segmentation, and OT protocols
• Experience working with engineering and operational technology teams
• Strong documentation and stakeholder communication skills
• Familiarity with SIEM/SOC integration within OT environments
• Active SC Clearance, or clearance that has lapsed within the last 12 months
• Maximum 2 week notice period
• OT asset discovery and monitoring tool experience is desirable
• Exposure to NIS regulations or UK CAF compliance is desirable
• Experience with ITSM and service delivery processes is desirable

Responsibilities

• Implement and maintain OT security controls across industrial environments
• Support OT network segmentation and secure remote access solutions
• Integrate OT environments into SIEM/SOC platforms
• Develop and tune OT threat detection rules
• Conduct OT security assessments, gap analysis, and remediation planning
• Support OT incident response and investigation activities
• Collaborate with engineering and operations teams to implement secure changes
• Produce governance documentation, standards, and reporting artefacts
• Track OT security maturity and continuous improvement initiatives

Technologies

• Support
• ITSM
• MS Teams
• Network
• Security

More

We are a government-backed organisation offering an exciting opportunity to join a highly secure and technically advanced environment supporting large-scale, mission-critical infrastructure programmes. The role is based in Culham, Oxfordshire, with two days onsite per week, and is offered on a contract until 18th December 2026. We use a one-stage interview process via MS Teams.

last updated 27 week of 2026