Job Description
Job Title: Cyber Security Analyst (Operational Technology)
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Location: (Oxfordshire) (2 days/week on-site), UK
Duration: 6 months+
IR35: Inside IR35
Overview
The Cyber Security Analyst will implement, operate, and continuously improve Operational Technology security controls across the Client’s environments. This includes hands-on security engineering, policy and standards development, risk assessments, SOC/SIEM integration, and collaboration with engineering teams and MSPs to ensure OT systems are protected in line with industry frameworks (IEC 62443, NIST CSF, CAF, ISO 27001).
Key Responsibilities:
- Deploy and maintain OT security controls (network segmentation, secure remote access, monitoring tools)
Integrate OT systems into SOC/SIEM, develop detection rules, and triage alerts
Support OT asset discovery, security assessments, and vulnerability remediation
Assist with OT incident response (log collection, triage, SOC coordination)
Collaborate with engineering teams for secure system changes
Report on OT security maturity, control coverage, and detection capabilities
Mentor junior team members on OT security practices
Essential Requirements:
- Experience in OT security within critical infrastructure (oil, gas, rail, chemical process industries)
SIEM/SOC xwwtmva integration for OT
Implementing OT security strategies, policies, and standards
Knowledge of OT networks, industrial protocols, and segmentation
Conducting OT risk assessments, gap analysis, and remediation
Desirable:
- OT asset discovery and monitoring experience
Regulatory compliance knowledge (e.g., NIS Directive, UK CAF)
Familiarity with project/service delivery and ITSM controls