Cyber Security Lead Engineer

2 weeks ago

Sydney, New South Wales, Australia Randstad Digital Full time $120,000 - $180,000 per year

Join a major cybersecurity program as a Cyber Security Systems Engineer Lead - OT, securing critical operational technology (OT) systems. This role suits an experienced professional ready to lead security control design and integration in a complex environment.

You will oversee the integration of cybersecurity tools into OT systems, ensuring compliance and resilience across the asset lifecycle-from procurement to decommissioning. Working with engineers, vendors, and operations teams, you'll deliver practical solutions that balance security and operational needs.

Key Responsibilities:

  • Design and implement security controls for OT systems, including ICS/SCADA, compatible with legacy environments.
  • Integrate tools like Nozomi Guardian or FortiNAC into OT/ICS systems.
  • Apply IEC 62443 zones/conduits and Purdue Model for secure architectures.
  • Turn compliance requirements into practical engineering solutions.
  • Configure OT firewalls, manage ACLs, and support field deployments.
  • Work cooperatively with teams to align on secure, practical outcomes.
  • Support OT incident response, threat hunting, and risk management.
  • Produce clear technical documentation, including network diagrams and plans.

What You Bring:

  • 8+ years in OT, ICS, or industrial automation with cybersecurity experience.
  • Expertise in OT protocols (e.g., Modbus, DNP3, IEC and real-time systems.
  • Experience with tools like Nozomi or Fortinet in OT settings.
  • Knowledge of IEC 62443, Purdue Model, and zero-trust principles.
  • Tertiary qualifications in Engineering or IT; certifications like GICSP, CISSP, or SANS ICS410/515.
  • Strong communication to connect technical and operational teams.
  • Ability to manage flexible delivery in a busy environment.

At Randstad Digital, we are passionate about providing equal employment opportunities and embracing diversity to the benefit of all. We actively encourage applications from any background.

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