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.