successfactors
Cybersecurity Architect
Alstom
Melbourne, AUS
Full-time
Senior · 8+ years experience
Onsite
Discovered 1 weeks ago
IDS/IPSEDRAD/RADIUSNIST
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Your future role
We are seeking an experienced Cybersecurity Architect with OT systems expertise in critical infrastructure to lead the design, implementation, and maintenance of secure architectures for a major rail project in Victoria. This role requires strong expertise in cybersecurity standards, architecture governance, and collaboration across cross-functional teams, including identity and access management and network communications production.
Your role, your impact
- Lead security analysis and define cybersecurity requirements and architecture for solutions Design and maintain resilient, threat-resistant security architectures Conduct risk assessments, implement security controls, and evaluate solutions Manage cybersecurity aspects of third-party vendors and oversee vulnerability management Provide technical guidance to project teams and support design reviews Act as the cybersecurity SME for stakeholders, ensuring alignment with governance policies Respond to security incidents and deliver post-incident analysis Monitor emerging cyber threats, trends, and technologies.
- Lead security analysis and define cybersecurity requirements and architecture for solutions
- Design and maintain resilient, threat-resistant security architectures
- Conduct risk assessments, implement security controls, and evaluate solutions
- Manage cybersecurity aspects of third-party vendors and oversee vulnerability management
- Provide technical guidance to project teams and support design reviews
- Act as the cybersecurity SME for stakeholders, ensuring alignment with governance policies
- Respond to security incidents and deliver post-incident analysis
- Monitor emerging cyber threats, trends, and technologies.
What you bring
A degree in Engineering, Cybersecurity, Computer Science or a related field, or equivalent experience. 8+ years’ experience in IT/OT cybersecurity architecture, implementation, and risk management, with a focus on security, performance, reliability, and operational availability. Hands-on experience implementing cybersecurity controls in metro rail, rail transport, or similar critical infrastructure OT environments. Strong understanding of OT environments, systems, network technologies, and cyber-physical constraints affecting safety, physical assets, and service continuity. Demonstrated expertise in secure architecture design, defence-in-depth, segmentation, and ISA/IEC 62443 application, including zone and conduit modelling, security level considerations, requirements mapping, and compliance evidence. Experience conducting OT cybersecurity and cyber-physical risk assessments, including risk treatment, residual risk documentation, and alignment with recognised standards such as ISA/IEC 62443, ISO 2700X, and NIST. Practical experience designing, deploying, or validating OT cybersecurity controls such as firewalls, IDS/IPS, EDR, secure remote access, jump servers, virtualisation security, proxy connections, cloud connectivity, data lake integration, and AD/RADIUS authentication. Knowledge of recognised techniques for evaluating system security, including vulnerability assessment and intrusion testing techniques. Ability to produce and maintain project cybersecurity artefacts, including security architecture, threat and risk assessments, zone and conduit models, firewall matrices, security requirements, test procedures, and assurance evidence. Experience assessing supplier technical solutions, designs, and cybersecurity evidence against project requirements, OT security standards, risk outcomes, and implementation feasibility. Strong communication and stakeholder engagement skills, with the ability to work effectively in fast-paced, complex environments.
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