Principal Security Architect - Operational Technology

The Principal Security Architect - OT is accountable for designing, developing, and overseeing the implementation of secure architectures within Operational Technology environments spanning generation, distribution, and energy market systems. This role ensures that OT networks, systems, and applications are built and maintained in compliance with corporate cybersecurity standards, the Australian Security of Critical Infrastructure (SOCI) Act, and the Australian Energy Sector Cyber Security Framework (AESCSF). The position requires deep expertise in industrial control systems and networking, combined with a strong understanding of energy market operations, to guarantee the secure and reliable functioning of critical energy infrastructure. Provide thought leadership based on industry trends and experience. Lead threat modelling, abuse case analysis, and security assessments to identify and mitigate OT vulnerabilities. Technical Expertise: experience across security engineering and architecture within medium to large multi-business organisations. Strong knowledge of security solutions and tools in Operational Technology (OT). Cybersecurity Knowledge: Deep understanding of OT and IT systems, including industrial control systems (SCADA, DCS, PLCs). Communication: Excellent stakeholder engagement and presentation skills; able to simplify complex technical concepts for senior management and delivery teams. Project Management: Capable of managing projects, prioritising tasks, and translating business requirements into fit-for-purpose security solutions within time and budget. Qualifications: Certifications such as CISSP, GICSP, SABSA or equivalent experience desirable.