Job Description

The Senior Microsoft Security Specialist is a key technical role within OceanaGold’s Information Security team in Brisbane, providing deep expertise across the Microsoft security and identity ecosystem.

Reporting to the Head of Information Security, the position has significant technical ownership across Microsoft Entra ID, Microsoft Defender, Microsoft Sentinel, Microsoft Purview, privileged access management and enterprise certificate services.

Sitting at the intersection of Information Security and Infrastructure, the role will influence the design and ongoing maturity of identity protection, threat detection and response, privileged access, data governance and security controls across the Microsoft 365 and Azure workplace. The position will also contribute to the development of security and governance controls supporting Microsoft Copilot and broader AI adoption.

Key Responlibilities

- Provide senior technical expertise across Microsoft Entra ID, including Conditional Access, hybrid identity, identity governance, entitlement management and application integrations.
- Lead the continued maturity of Entra ID Protection, risk-based access controls and Zero Trust architecture.




- Drive improvements across Microsoft Defender XDR and Microsoft Sentinel, including detection use cases, automation, playbooks and alert optimisation.
- Provide advanced technical support for complex identity and security incidents, including threat hunting, containment and remediation.
- Manage the technical relationship with the managed security services provider, supporting continuous improvement across detection and response.
- Strengthen privileged access and identity management capabilities, including least-privilege access models.
- Support the ongoing maturity of enterprise certificate services and certificate lifecycle management.
- Lead the technical implementation of Microsoft Purview, including Data Loss Prevention, Information Protection and Insider Risk Management.
- Contribute to security and governance controls supporting Microsoft Copilot and other AI technologies.
- Provide technical leadership and mentoring across the Information Security team, building broader capability across Microsoft security technologies.
- Represent Information Security across technical forums, technology partners and cross-functional security initiatives.

📌 Senior Microsoft Security Specialist (Brisbane)
🏢 Oceanagold
📍 Brisbane