OT/ICS Cyber Security Architect

Salary: £40,000 - 70,000 per year

Requirements

: Proven experience securing Operational Technology (OT) or Industrial Control Systems (ICS) environmentsStrong understanding of IT/OT convergence and securing legacy or brownfield industrial estatesKnowledge of recognised OT security standards such as IEC 62443 (ISA-99), NIST SP 800-82, and application of the Purdue ModelExperience designing secure segmentation models (zones and conduits), industrial firewalls, and secure remote access solutionsFamiliarity with industrial protocols such as Modbus, DNP3, Ethernet/IP, OPC/UA, and associated security risksExperience operating in regulated, safety-critical, or high-availability environmentsAbility to translate technical risk into clear architectural decisions for engineering and operational audiences Responsibilities: Define and implement security architecture principles across OT / ICS environmentsEmbed secure-by-design controls into industrial systems and operational technology platformsLead design assurance across OT network segmentation, zone and conduit modelling, and industrial DMZ architecturesIdentify architectural gaps within existing OT estates and define pragmatic remediation roadmapsAlign OT security architecture to recognised frameworks and regulatory

Requirements

Collaborate with OT engineers, operational stakeholders, and cyber teams to balance safety, availability, and securityProvide architectural guidance across IT/OT convergence programmes Technologies: ArchitectEthernetNetworkSecurity More: We are a large organization undergoing significant cyber and digital transformation and are seeking a Cyber Security Architect focused on Operational Technology (OT). This strategic, high-impact role centers on securing industrial control systems and operational networks, ensuring operational resilience and risk mitigation. We offer 30 days holiday plus bank holidays, flexible leave options, family-friendly policies, and a generous employer pension contribution.

This permanent position is based in the North West of England, and we welcome candidates from any industry with relevant OT/ICS experience. last updated 37 week of 2026