OT Cyber Security Engineer: Secure Industrial IT & Identity

Origin Energy Services Ltd; Adelaide; On-site; AUD 110,000 - 140,000; Full time

Job summary

Origin Energy Services Ltd is seeking an Engineer – OT Cyber Security to secure the OT environments that support Origin's critical energy infrastructure. You will design and implement secure solutions across OT, Windows Server and Active Directory, collaborating with cyber security, OT engineering and infrastructure teams.

You will strengthen identity and access controls, contribute to audits and regulatory compliance, and help uplift Origin's OT security capability to ensure resilience,

Qualifications

• Experience securing OT, ICS or critical infrastructure environments.
• Expertise in Windows Server, AD, Group Policy and identity and access management.
• Knowledge of RBAC and least-privilege principles and privileged account management.
• Familiarity with OT cyber security frameworks such as IEC 62443, NIST or Essential Eight.

Responsibilities

• Design and implement cyber security controls across OT infrastructure, Windows Server and Active Directory environments.
• Partner with OT, infrastructure and cyber security teams to deliver secure-by-design solutions across the full technology lifecycle.
• Strengthen identity, authentication and privileged access controls to reduce cyber risk across operational environments.
• Support cyber incident response, vulnerability management and continuous improvement initiatives.
• Contribute to audit, regulatory compliance and the ongoing uplift of Origin's OT cyber security capability.

Skills

Windows Server

Active Directory

Identity and access management

RBAC

Least-privilege principles

Privileged account management

IEC 62443

NIST

Essential Eight

Communication

Job description

Origin Energy Services Ltd is seeking an Engineer – OT Cyber Security to secure the OT environments that support Origin's critical energy infrastructure. You will design and implement secure solutions across OT, Windows Server and Active Directory, collaborating with cyber security, OT engineering and infrastructure teams.

You will strengthen identity and access controls, contribute to audits and regulatory compliance, and help uplift Origin's OT security capability to ensure resilience,