OT Cyber Security Architect

InfoSec People Ltd; Rochester; Hybrid; GBP 77,000 - 94,000; Full time

Benefits offered by this job

Pension and wellbeing benefits

Training and qualification support

Job summary

InfoSec People Ltd is recruiting an OT Cyber Security Architect for a growing organisation delivering projects across energy, metering and critical infrastructure. The role is hands-on, customer facing, leading OT security architecture across customer projects and turning needs into security requirements.

You will design secure IT/OT interfaces and data flows, apply ISA/IEC 62443, produce diagrams and support implementation, testing and handover. Travel is occasional and hybrid in Rochester.

Qualifications

• Experience designing security solutions for OT, ICSE or SCADA environments.
• Practical ISA/IEC 62443 knowledge.
• Strong understanding of IT/OT integration and the Purdue Model.
• Experience supporting designs through implementation.
• Confidence leading customer workshops and technical discussions.
• Ability to balance security with operational availability and resilience.

Responsibilities

• Lead OT security architecture across customer projects.
• Turn customer needs into clear security requirements.
• Design secure IT/OT interfaces, networks and data flows.
• Apply ISA/IEC 62443 to segmentation, zones and conduits.
• Produce architecture diagrams and design documentation.
• Support implementation, testing and handover.
• Review supplier and engineering designs.
• Contribute to risk assessments, FAT and SAT.
• Help develop OT security standards and reusable designs.

Skills

OT security architecture

ISA/IEC 62443

IT/OT integration

Leading customer workshops

Risk assessments

Job description

Occasional UK client travel

We are recruiting an OT Cyber Security Architect for a growing organisation operating across energy, metering and critical infrastructure.

This is a hands-on, customer-facing architecture role. You will help customers understand their OT security needs, design practical solutions across IT and OT environments, and support those designs through implementation.

The role

• Lead OT security architecture across customer projects
• Turn customer needs into clear security requirements
• Design secure IT/OT interfaces, networks and data flows
• Apply ISA/IEC 62443 to segmentation, zones and conduits
• Produce architecture diagrams and design documentation
• Support implementation, testing and handover
• Review supplier and engineering designs
• Contribute to risk assessments, FAT and SAT
• Help develop OT security standards and reusable designs

About you

You will bring:

• Experience designing security solutions for OT, ICSE or SCADA environments
• Practical ISA/IEC 62443 knowledge
• Strong understanding of IT/OT integration and the Purdue Model
• Experience supporting designs through implementation
• Confidence leading customer workshops and technical discussions
• The ability to balance security with operational availability and resilience

Experience in energy, utilities, metering, systems integration or critical infrastructure would be particularly relevant.

Knowledge of NCSC CAF, NIS, NIST SP 800-82, OT monitoring, vulnerability management or embedded-device security would be beneficial, but you do not need every item to apply.

What is on offer?

• Salary up to £85,000
• Genuine ownership of customer-facing OT security architecture
• Exposure to energy, metering and critical infrastructure projects
• Hybrid working with two days per week in Rochester
• Client travel typically less than once per month
• Pension and wellbeing benefits
• Training and qualification support