OT Cyber Security Specialist (Contract)


Location: Hybrid – 3 days onsite (Oxfordshire), remainder remote
Day Rate: £400-£450 per day (Outside IR35)
Start Date: ASAP
Clearance: SC required
Hours: 37.5 per week (typically 9:00am–5:30pm)


Overview
We are supporting a leading UK organisation within the advanced engineering and research sector, seeking an OT Cyber Security Specialist to play a key role in building and maturing their Operational Technology (OT) security capability.
This is a greenfield opportunity to shape and implement OT security strategy, frameworks, and governance across complex industrial environments.


Key Responsibilities
*Lead the design and delivery of the OT Security Strategy, including policies and standards
*Establish governance processes aligned to enterprise security frameworks
*Conduct OT risk assessments and gap analyses against recognised standards (e.g. IEC 62443, NIST CSF, CAF)
*Identify and oversee implementation of security controls across OT environments
*Provide technical oversight when working with managed service providers and third-party vendors
*Collaborate with enterprise security teams to align OT and IT security initiatives
*Support OT incident response, including coordination with SOC teams where applicable
*Mentor junior team members and contribute to capability development
*Track and report on OT security maturity and roadmap progress


Essential Experience
*Proven experience developing and maturing OT security within ICS or critical infrastructure environments
*Strong background in defining and implementing OT security strategies, policies, and standards
*Deep understanding of OT security frameworks (IEC 62443, NIST CSF, CAF, ISO 27001)
*Experience conducting OT risk assessments, gap analysis, and remediation planning
*Knowledge of OT networks, segmentation, and industrial protocols
*Experience working closely with engineering and operational teams
*Ability to oversee third-party vendors and managed security services
*Strong documentation and stakeholder communication skills


Desirable Experience
*Experience in solution architecture
*Familiarity with SIEM/SOC integration in OT environments
*Experience with OT asset discovery and monitoring tools
*Knowledge of regulatory frameworks within critical infrastructure (e.g. NIS)
*Experience contributing to working groups or acting as a subject matter expert.


Please apply with an up to date version of your CV for immediate consideration.