Senior Microsoft Security Specialist

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 environment. 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. A bachelor’s degree in Information Technology, Computer Science, Cybersecurity or a related field, or equivalent demonstrated experience. Minimum 5 years experience in enterprise information or cybersecurity roles. Strong hands-on experience with Microsoft Entra ID, Microsoft Defender XDR and Microsoft Purview. Experience administering privileged access management or privileged identity management solutions. Experience supporting enterprise certificate services. Experience working with infrastructure or platform teams at an advanced technical support level. Exposure to managed security service providers, security operations, incident response and security reporting. Strong documentation, collaboration and technical mentoring skills. WHAT'S ON OFFER: Competitive salary + short-term and long-term bonuses Discounts on retail and services Premium end of ride facilities Wellness room Office surrounded by restaurants, shops and a short stroll to Southbank Parklands Living Our Values recognition program Access to OceanaGold Employee Assistance Program (EAP) Exceptional working environment where people are valued and respected Eligibility to Work: To be considered for this role, you must have valid working rights in the country where the role is located. Unfortunately, we are unable to offer visa sponsorship at this time. YOU MATTER: OceanaGold is committed to providing equal employment opportunities. We believe a variety of perspectives are not only welcome – they are essential to our success. Should you require any assistance applying for this opportunity, please contact us at PLEASE NOTE: APPLICATIONS FROM AGENCIES WILL NOT BE ACCEPTED OceanaGold is a global intermediate gold and copper producer with more than 35 years of exploration, development and operating experience. We have four operating mines – Haile in the USA, Macraes and Waihi in New Zealand, and Didipio in the Philippines and a global workforce of ~5,400 employees and contractors. Our people, assets, and strategy are core to our success. Guided by our values—Care, Respect, Integrity, Performance, and Teamwork—we strive to be a trusted company people want to work for, partner with, supply and invest in, to create value. We are committed to safe and responsible mining that generates strong returns and contributes to sustainable development in the regions where we operate. OceanaGold is listed on the Toronto and New York Stock Exchanges (TSX: OGC; NYSE: OGC).