Senior OT Cyber Security Engineer - Real-World Industrial Impact

Trivela Talent; Melbourne; On-site; AUD 150,000 - 210,000; Full time

Job summary

Trivela Talent seeks a hands-on Senior OT Cyber Security Engineer to lead engagements securing operational technology in energy and critical infrastructure. You will work on real systems such as SCADA, historians and plant networks, focusing on hardening, segmentation and secure access.

You’ll communicate findings to engineers and executives, delivering tangible security improvements. The role emphasizes practical outcomes over policy writing, with opportunities to shape security in wind, solar

Qualifications

• 7+ years of cyber security, OT security or related engineering experience.
• Proven experience in energy, utilities or critical infrastructure environments.
• Hands-on capability with OS hardening, firewall configuration, network security and OT risk assessment/remediation.

Responsibilities

• Review critical infrastructure risk management plans against regulatory frameworks (SOCI, energy market requirements, IEC 62443).
• Assess OT/SCADA environments, OS baselining/hardening, patch/vulnerability/configuration management in OT contexts.
• Design firewall architectures, IT/OT boundary controls, network segmentation (Purdue/IEC 62443), secure remote/vendor access.
• Evaluate logging, monitoring and incident readiness.
• Produce gap analyses and actionable recommendations.
• Deliver reports and workshops for technical and executive audiences.

Skills

OT security

OS hardening

Firewall configuration

Network security

OT risk assessment

Executive communication

Consulting experience

Job description

Trivela Talent seeks a hands-on Senior OT Cyber Security Engineer to lead engagements securing operational technology in energy and critical infrastructure. You will work on real systems such as SCADA, historians and plant networks, focusing on hardening, segmentation and secure access.

You’ll communicate findings to engineers and executives, delivering tangible security improvements. The role emphasizes practical outcomes over policy writing, with opportunities to shape security in wind, solar