Operational Technology (OT) Security Architect
The OT Security Architect is responsible for protecting industrial control systems (ICS) and operational technology environments against cyber threats while ensuring safety, availability, and regulatory compliance. The role bridges IT and OT, enabling secure digital operations across critical infrastructure environments such as utilities, energy, manufacturing, and transportation.
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.
#LI-EU
Dublin
Equal Employment Opportunity Statement for Australia and New Zealand
At Accenture, we recognise that our people are multi-dimensional, and we create a work environment where all people feel like they can bring their authentic selves to work, every day.
Our unwavering commitment to inclusion and diversity unleashes innovation and creates a culture where everyone feels they have equal opportunity. Our range of progressive policies support flexibility in ‘where’, ‘when’ and ‘how’ our people work to ensure that Accenture is an organisation where you can strive for more, achieve great things and maintain the balance and wellbeing you need.
We encourage applications from all people, and we are committed to removing barriers to the recruitment process and employee lifecycle. All employment decisions shall be made without regard to age, disability status, ethnicity, gender, gender identity or expression, religion or sexual orientation and we do not tolerate discrimination. If you require any accommodations or adjustments for interviews and/or at work, please reach out to exectalent@accenture.com or contact us at +61 2 9005 5000 (Australia) or +64 44666056 (New Zealand).
To ensure our workplace is inclusive and diverse we are setting bold goals and taking comprehensive action. To achieve these goals, we collect information that allows us to track the effectiveness of our Inclusion and Diversity programs. Learn how Accenture protects your personal data and know your rights in relation to your personal data. Read more about our Privacy Statement.
We work with one shared purpose: to deliver on the promise of technology and human ingenuity. Every day, more than 775,000 of us help our stakeholders continuously reinvent. Together, we drive positive change and deliver value to our clients, partners, shareholders, communities, and each other.
We believe that delivering value requires innovation, and innovation thrives in an inclusive and diverse environment. We actively foster a workplace free from bias, where everyone feels a sense of belonging and is respected and empowered to do their best work.
At Accenture, we see well-being holistically, supporting our people’s physical, mental, and financial health. We also provide opportunities to keep skills relevant through certifications, learning, and diverse work experiences. We’re proud to be consistently recognized as one of the World’s Best Workplaces™.
Join Accenture to work at the heart of change. Visit us at www.accenture.com.