Senior OT Security Architect

4 weeks ago

London, United Kingdom 55 Exec Search Full time

Senior OT / CNI Security ArchitectUK-based | Remote with client travel | Must be eligible for UK Gov Security ClearanceWe’re seeking a Senior OT Security Architect to join a fast-paced consulting engagement within a complex, high-impact technology environment.The Senior OT / CNI Security Architect will help secure some of the most critical environments in the UK – from energy and utilities to transport, manufacturing and wider CNI clients.You’ll blend hands-on technical expertise and security architecture with a consulting mindset, acting as a trusted advisor to clients and shaping secure-by-design OT/ICS and hybrid IT/OT solutions.What you’ll do:Design and deliver OT / CNI security architectures for ICS/SCADA, industrial networks and hybrid IT/OT environmentsProduce key artefacts: threat models, risk assessments, high/low-level designs, security roadmapsWork with client engineering, ops and security teams in a trusted advisor capacityLead or support cyber/OT security assessments and transformation projectsContribute to the development of our OT / CNI consulting offerings and collateralWhat we’re looking forStrong experience designing and implementing cybersecurity controls across OT and/or hybrid environmentsExperience cyber / information security consulting or auditingGood knowledge of frameworks such as IEC 62443, NIS/NIS2, NIST, ISO 27001, CIS, CAF, Cyber EssentialsComfortable engaging with both technical and non-technical stakeholdersAdaptable, curious, and able to work across different sectors and technologiesNice to haveCISSP, CISM, CISA, SABSA, TOGAF, ISO 27001 Lead Auditor/ImplementerCloud (Azure / AWS) and/or IAM / PAM experienceBackground in OT, CNI or industrial environmentsWhy join our client: A genuinely flexible environment – work where and how you’re most productive. The team comes together regularly for meetups and technical sessions that feel more like catching up with friends than formal meetings.A culture built on trust and respect – you’ll find leaders who listen, colleagues who share knowledge freely in an autonomous environment.Genuine work-life balance – they know great work comes from happy people, not long hours.Continuous growth – ongoing training, certifications, and support to help you develop into senior architecture and advisory roles.Variety and impact – projects span OT, secure infrastructure, identity, network, and endpoint security across on-premises, cloud, and hybrid environments (Azure, AWS, M365).

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