Senior OT Cybersecurity Architect – Rail Infrastructure

Hitachi Rail Limited; Sydney; On-site; AUD 180,000 - 260,000; Full time

Benefits offered by this job

Annual performance review

Professional development

Health and wellbeing initiatives

Employee Assistance Program

Paid holidays and leave

Job summary

HITACHI RAIL STS AUSTRALIA PTY LTD in Sydney, Australia, is seeking a Principal OT Cybersecurity Infrastructure Engineer. The role combines security architecture ownership with hands‑on engineering to design, implement, and validate OT cybersecurity infrastructure for railway and critical infrastructure projects.

You will translate standards such as IEC 62443, NIST, and ISO into practical controls, lead security testing and commissioning activities, and mentor engineers while coordinating with

Qualifications

• Engineering degree enabling full membership to Engineers Australia.
• Bachelor’s degree in cybersecurity, computer science, information technology, telecommunications engineering, automation engineering, systems engineering, or an equivalent technical discipline.
• A master’s degree in cybersecurity, information assurance, or systems engineering is desirable.
• At least five years of professional experience in IT/OT cybersecurity infrastructure, including responsibility for architecture and deployment.
• Demonstrated delivery experience in railway, transportation, energy, utilities, oil and gas, or another critical‑infrastructure environment.
• Hands‑on experience designing, configuring, integrating, testing, and commissioning cybersecurity platforms and controls.
• Practical application of IEC 62443, including zones and conduits, defence in depth, security levels, and system and component requirements.

Responsibilities

• Define end‑to‑end, vendor‑agnostic OT cybersecurity architectures using zones, conduits and defence in depth.
• Lead design, configuration, integration, and validation of network and perimeter security and IAM.
• Translate IEC 62443, CLC/TS 50701, NIST and ISO requirements into practical controls.
• Define and execute security FAT and SAT activities, hardening and tests.
• Coordinate with OT, network, systems, SOC, vendor, and systems‑integration teams.
• Mentor engineers and influence multidisciplinary design decisions.

Skills

IT/OT security

Security architecture

IEC 62443

Mentor engineers

Education

Engineering degree enabling full Engineers Australia

Bachelor’s degree in cybersecurity/CS/IT/engineering

Master’s degree in cybersecurity/IS/SE (desirable)

Tools

Security architecture tools

Vulnerability assessment tools

Job description

HITACHI RAIL STS AUSTRALIA PTY LTD in Sydney, Australia, is seeking a Principal OT Cybersecurity Infrastructure Engineer. The role combines security architecture ownership with hands‑on engineering to design, implement, and validate OT cybersecurity infrastructure for railway and critical infrastructure projects.

You will translate standards such as IEC 62443, NIST, and ISO into practical controls, lead security testing and commissioning activities, and mentor engineers while coordinating with