Cyber Defence Engineer

Singtel • Australia, New South Wales • Posted June 29, 2026

About the Role

Senior Security Analyst – Cyber Defence Operations

Optus is a leading Telecommunications company known for delivering innovative solutions, disrupting the industry, and evolving into a technology-driven organisation with a diverse portfolio of products and services. With a strong commitment to excellence and a customer-first mindset, we continue to push the boundaries of cyber security to protect our customers, platforms, and data.

As part of our Cyber Defence Operations (CDO) team, you’ll play a critical role in strengthening our detection and response capabilities, helping safeguard one of Australia’s largest digital ecosystems.

Due to the nature of the role and environment in Optus Security & Risk, we are ideally seeking candidates who hold Australian Citizenship and current have or are wiling to obtain Security Clearance.


What You’ll Do

Partnering closely with the Senior Director of Ad...