Principal OT Cybersecurity Infrastructure Engineer
Core
Design, implement, integrate, and validate complete OT cybersecurity infrastructure for railway and critical-infrastructure projects, acting as the technical authority for security platforms across the full lifecycle.
Role type
Principal OT Cybersecurity Infrastructure Engineer
Builds
OT cybersecurity architectures, network and perimeter security, identity and access management, threat detection, SOC-enabling technologies, and secure core IT/OT infrastructure.
Domain
Rail transport and critical infrastructure cybersecurity
Required skills
OT cybersecurity architecture, IEC 62443 standards, network security design, identity and access management, threat detection, security testing and commissioning, regulatory compliance (Australian critical infrastructure), technical coordination, mentorship
Preferred skills
Railway or critical-infrastructure domain experience, CLC/TS 50701 knowledge, engagement with regulators and assurance stakeholders
Technologies
OT security platforms, network security tools, identity management systems, threat detection systems, security case documentation tools
Responsibilities
Define end-to-end OT cybersecurity architectures using zones and conduits; Lead design and validation of security platforms; Translate international standards into practical controls; Execute security FAT and SAT activities; Coordinate with OT, network, and vendor teams; Adapt designs to Australian regulatory obligations and mentor engineers
Seniority
Principal, hands-on IC with strategic ownership
