OT Security Architect for Critical Infrastructure

Talent; Melbourne; On-site; AUD 130,000 - 190,000; Full time

Benefits offered by this job

Complex OT projects

Exposure to critical infrastructure

Cross-functional teams

Professional development opportunities

Job summary

Talent is seeking an experienced OT Security Consultant to support cyber security initiatives across complex OT environments in Melbourne. The role focuses on identifying risks, strengthening controls and supporting frameworks across industrial systems and critical infrastructure.

You will conduct risk assessments, design OT security architectures and contribute to remediation roadmaps, enabling secure operations across SCADA, PLC and DCS environments.

Qualifications

• Experience in OT/ICS security consulting and architecture.

Responsibilities

• Conduct OT cyber security risk assessments and gap analyses.
• Assess and improve security controls across SCADA, IC, PLC and DCS environments.
• Design and implement OT security strategies, architectures and remediation roadmaps.
• Perform OT vulnerability assessments and identify threats across industrial networks.
• Develop and maintain OT cyber security policies, standards, procedures and governance frameworks.
• Support compliance with IEC 62443, NIST CSF, ISO 27001 and relevant regulations.
• Provide guidance on OT network segmentation, firewalls, secure remote access and access management.
• Review OT architectures and recommend security improvements.
• Support OT asset discovery, asset inventory management and security classification.
• Conduct security maturity assessments and actionable recommendations.
• Assist with OT incident response planning, cyber resilience and disaster recovery strategies.
• Identify and assess third-party and vendor security risks in OT.
• Support OT security monitoring and vulnerability management solutions.
• Collaborate with engineering, infrastructure, operations and cyber security teams to embed security.
• Prepare technical documentation, risk registers and remediation plans.
• Engage business stakeholders to communicate risks and recommendations.

Skills

OT/ICS security

Security architecture

Vulnerability assessments

Threat modelling

Incident response

Stakeholder engagement

Documentation

OT/IT convergence

Modbus, DNP3, OPC UA, IEC 60870-5-104

Education

GICSP

CISSP

CISM

IEC 62443 qualifications

Tools

Claroty

Nozomi Networks

Microsoft Defender for IoT

Job description

Talent is seeking an experienced OT Security Consultant to support cyber security initiatives across complex OT environments in Melbourne. The role focuses on identifying risks, strengthening controls and supporting frameworks across industrial systems and critical infrastructure.

You will conduct risk assessments, design OT security architectures and contribute to remediation roadmaps, enabling secure operations across SCADA, PLC and DCS environments.