JOB DESCRIPTION

Join Telstra’s Security & Operations team as a Senior Security Engineer - Identity & Directories , and help safeguard the identity infrastructure that underpins the digital backbone of Australia’s largest telco. Sitting within our Information and Cybersecurity function, this role focuses on hardening and securing Telstra’s enterprise Microsoft Active Directory (AD) environment, a core component of our identity and access management (IAM) ecosystem.
You’ll work end-to-end across the design, deployment, and ongoing support of Active Directory integrations and security uplift activities. From lifecycle management to recovery tools, you’ll be hands-on in delivering resilient identity infrastructure and responding to internal and external audit requirements.
This is a high-impact, technical individual contributor role , ideal for someone who’s experienced with enterprise identity environments and passionate about securing core digital assets.

• Lead and support the secure design and implementation of AD integrations and IAM services
• Collaborate across cyber, IT, and DevOps teams to embed secure identity practices
• Drive hardening, remediation, and response activities for AD and directory-related threats
• Contribute to security architecture, frameworks, and standards across identity systems
• Provide expert input into audits, compliance reviews, and advanced threat response
• Implement and maintain observability and recovery solutions for identity infrastructure.
  You’re an experienced infrastructure security engineer or identity specialist who thrives in enterprise environments. You have strong Active Directory knowledge and can troubleshoot, script, and collaborate across teams to protect critical services.