OT Security Architect — Lead ICS/SCADA Architecture

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

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.