OT/CNI Architects
12 months contract
£60-£90 per hour (Inside IR35)
3 days a week on site (PR4) - Preston
Role Purpose / Overview
Specialist architects with deep capability in Operational Technology, Industrial Control Systems (ICS/SCADA), and Critical National Infrastructure. Responsible for securing safety-critical environments while maintaining operational integrity and integrating OT into enterprise security frameworks.
Key Responsibilities
- Bridge IT security and safety-critical engineering
- Secure OT and safety-critical systems without compromising operational integrity
- Integrate IT, OT and cloud environments under a consistent security approach
- Perform Zone & Conduit modelling and embed cyber controls
- Incorporate OT systems into enterprise monitoring and control frameworks
- Reduce cyber risk in high-hazard environments
Key Outcomes
- OT and safety-critical systems are secured without compromising operational integrity
- IT, OT and cloud environments are integrated under a consistent security approach
- Cyber risk in high-hazard environments is understood and systematically reduced
- OT systems are incorporated into wider enterprise monitoring and control frameworks
Technical Skills & Experience
- IEC 62443 / ISA 62443-3-2 risk assessments, Zone & Conduit modelling, control mapping
- Secure-by-Design across IT, OT, cloud and classified systems
- Network segmentation, secure access architecture for OT (Gigamon, Forescout)
- Integration of OT assets into SOC / SIEM (QRadar)
- Threat modelling, penetration testing oversight, vulnerability benchmarking
- PKI, identity architecture, secure cloud architecture (AWS, Azure, O365, GCP)
- Safety & security assurance case development, NIS CAF, GovAssure, MOD accreditation
- Cyber incident command, crisis management and operational readiness in high-hazard environments
- Regulator engagement (Defence Nuclear Regulator, DSA.02, ONR, NCSC)
Qualifications & Certifications
- CISSP, CEH, ISA 62443 Fundamental Specialist Certification
- AWS Security Specialist, AZ-500 (training)
- Chartered Engineer (IET), MEng Electronic Engineering
- Clearances: SC (active)