Operational Technology (OT) Security Architect

Accenture; Dublin; On-site; EUR 90,000 - 120,000; Full time

Job summary

Accenture is seeking an experienced OT Security expert in Ireland to lead strategy, governance, and secure design across OT/ICS environments. You will collaborate with OT operations, engineering and executives to align with IEC 62443, NIST 800-82, NISD and ISO 27001 OT controls.

You will oversee risk registers, vulnerability and pen-testing programs, and implement secure IT/OT integration and remote access patterns. This role involves multi-site deployments and regulatory compliance support.

Qualifications

• Strong hands-on experience in OT/ICS/SCADA/DCS environments.
• Deep understanding of industrial networking, protocols, and architectures.
• Proven experience delivering OT security assessments, designs, and implementations.
• Knowledge of OT security standards and frameworks such as IEC 62443, NIST 800-82, NISD, ISO 27001 OT controls.

Responsibilities

• Define and implement OT cybersecurity strategy, policies, and standards aligned to IEC 62443, NIST 800-82, NISD, 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 and data flows.
• Review and secure digital transformation initiatives (historians, analytics platforms).
• Conduct OT risk and vulnerability assessments, 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 (IDS, firewalls, remote access, data diodes).
• Coordinate across dispersed field sites and uplift programmes.
• Translate regulatory requirements into practical site-level security controls.

Skills

OT/ICS/SCADA/DCS

Industrial networking

OT security assessments

OT security standards

Job description

Key Responsibilities

OT Security Strategy & Governance

• Define and implement OT cybersecurity strategy, policies, and standards aligned to IEC 62443, NIST 800 82, NIS D, 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.

Architecture & Secure Design

• 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).

Threat & Vulnerability Management

• Conduct OT specific risk assessments, vulnerability assessments, and penetration testing of SCADA/DCS/PLC environments.
• Implement vulnerability management and patching strategies suitable for safety critical systems.
• Support OT incident response and forensic investigations.

Security Controls Implementation

• Deploy and operate OT security technologies including:
  • OT Intrusion Detection / Network Monitoring (e.g., passive IDS)
  • Firewalls and segmentation controls at Levels 2 & 3
  • Secure remote access solutions
  • Removable media controls and data diodes
• Support deployment across geographically dispersed and remote field sites.

Compliance & Regulatory Assurance

• Support compliance with NIS D, sector specific regulations, and audit requirements.
• Prepare evidence, security reports, and remediation plans for regulatory and internal audits.
• Translate regulatory requirements into practical, site level security controls.

Stakeholder & Delivery Management

• Liaise with plant operators, OT engineers, OEMs, vendors, and system integrators.
• Lead or support multi-site OT security deployments and uplift programmes.
• Provide training and awareness sessions for OT and SCADA teams.

Required Experience & Skills

• Strong hands-on experience in OT / ICS / SCADA / DCS environments.
• Deep understanding of industrial networking, protocols, and architectures.
• Proven experience delivering OT security assessments, designs, and implementations.
• Knowledge of OT security standards and frameworks:
  • IEC 62443
  • NIST 800 82
  • NIS D
  • ISO 27001 (OT relevant controls)
• Experience working in critical infrastructure or highly regulated environments.

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About Accenture

Accenture is a leading global professional services company that helps the world’s leading businesses, governments and other organizations build their digital core, optimize their operations, accelerate revenue growth and enhance citizen services creating tangible value at speed and scale. We are a talent- and innovation-led company with approximately 791,000 people serving clients in more than 120 countries. Technology is at the core of change today, and we are one of the world’s leaders in helping drive that change, with strong ecosystem relationships. We combine our strength in technology and leadership in cloud, data and AI with unmatched industry experience, functional expertise and global delivery capability. Our broad range of services, solutions and assets across Strategy & Consulting, Technology, Operations, Industry X and Song, together with our culture of shared success and commitment to creating 360° value, enable us to help our clients reinvent and build trusted, lasting relationships. We measure our success by the 360° value we create for our clients, each other, our shareholders, partners and communities.

Visit us at www.accenture.com

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