OT/ICS Cyber Security Architect

IBEX RECRUITMENT LTD

Warrington, UK

2 days ago

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Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Compensation

£40,000.0 - £70,000.0

Working hours

Regular working hours

Job source

Cyber Security Ethernet Modbus Network Segmentation Process Control Systems Operational Systems

Define and implement security architecture principles across OT / ICS environments
Embed secure-by-design controls into industrial systems and operational technology platforms
Lead design assurance across OT network segmentation, zone and conduit modelling, and industrial DMZ architectures
Identify architectural gaps within existing OT estates and define pragmatic remediation roadmaps
Align OT security architecture to recognised frameworks and regulatory requirements
Collaborate with OT engineers, operational stakeholders, and cyber teams to balance safety, availability, and security
Provide architectural guidance across IT/OT convergence programmes

Technologies:

Architect
Ethernet
Network
Security, 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.

Proven experience securing Operational Technology (OT) or Industrial Control Systems (ICS) environments
Strong understanding of IT/OT convergence and securing legacy or brownfield industrial estates
Knowledge of recognised OT security standards such as IEC 62443 (ISA-99), NIST SP 800-82, and application of the Purdue Model
Experience designing secure segmentation models (zones and conduits), industrial firewalls, and secure remote access solutions
Familiarity with industrial protocols such as Modbus, DNP3, Ethernet/IP, OPC/UA, and associated security risks
Experience operating in regulated, safety-critical, or high-availability environments
Ability to translate technical risk into clear architectural decisions for engineering and operational audiences