Senior OT Security Architect for Critical Infrastructure

Accenture UK & Ireland; Dublin; On-site; EUR 85,000 - 120,000; Full time

Job summary

Accenture UK & Ireland is seeking an OT Security Architect to protect ICS/OT environments and enable secure digital operations across utilities, energy, manufacturing, and transportation sectors. You will bridge IT and OT, implement IEC 62443/NIST 800-82/NIS D/ISO 27001-aligned controls, and lead multi-site deployments.

You will lead risk assessments, vulnerability management, and incident response, while coordinating with OT engineers, operators, and vendors to ensure safety and regulatory

Qualifications

• Strong hands-on experience in OT / ICs environment.
• Deep understanding of industrial networking, protocols, and architectures.
• Proven experience delivering OT security assessments, designs, and implementations.

Responsibilities

• Define and implement OT cybersecurity strategy, policies, and standards aligned to IEC 62443, NIST 800-82, NISD, and ISO 27001.
• Establish OT security governance models and maintain OT risk registers across facilities.
• Act as a trusted advisor to OT operations, engineering, and executive stakeholders.
• Design secure OT network architectures aligned to the Purdue Model (Levels 0–3.5).
• Define and validate secure IT/OT integration patterns, including data flows, remote access, and segmentation.
• Review and secure digital transformation initiatives (e.g., historians, analytics platforms).
• Conduct OT specific risk assessments, vulnerability assessments, and penetration testing of SCADA/DCS/PLC environments.
• Implement vulnerability management and patching strategies for safety critical systems.
• Support OT incident response and forensic investigations.
• Deploy and operate OT security technologies including OT Intrusion Detection / Network Monitoring, firewalls and segmentation controls at Levels 2 & 3, secure remote access solutions, removable media controls and data diodes.

Job description

Accenture UK & Ireland is seeking an OT Security Architect to protect ICS/OT environments and enable secure digital operations across utilities, energy, manufacturing, and transportation sectors. You will bridge IT and OT, implement IEC 62443/NIST 800-82/NIS D/ISO 27001-aligned controls, and lead multi-site deployments.

You will lead risk assessments, vulnerability management, and incident response, while coordinating with OT engineers, operators, and vendors to ensure safety and regulatory