Permanent position with a well-established security consultancy Opportunity to obtain security clearance Hybrid working arrangement An established and security‑focused IT security consultancy is seeking an experienced Systems Administrator to maintain, secure and improve its internal technology environment. This is a hands‑on role for someone who enjoys owning systems end‑to‑end, working closely with the business, and operating within a high‑trust, compliance‑driven environment. The role is responsible for the reliability, security, and day‑to‑day operation of the organisation’s IT infrastructure, with a strong focus on Microsoft 365, SharePoint‑based document management, cyber security, and vendor oversight. Key Responsibilities Administer and maintain Microsoft 365, including SharePoint, Teams, Exchange, Entra ID, Defender and Purview Ensure availability, performance, and security of Windows server, endpoint, and network environments Oversee SharePoint and document management platforms, including permissions, data governance, and user support Support and monitor cyber security controls and compliance with DISP, ISM, and Essential Eight requirements Act as the primary operational interface with Managed Service Providers and key technology vendors Monitor system health, backups, incident resolution, and service delivery performance Manage user lifecycle processes including onboarding, offboarding, and access control Maintain accurate IT documentation, policies, procedures, and asset records Provide escalation support for critical IT issues and communicate outages or changes to staff Requirements Australian citizenship with the ability to obtain security clearance 3–5 years’ experience in a Systems Administrator or similar IT operations role Strong hands‑on experience with Microsoft 365 and SharePoint administration Solid knowledge of Windows Server, Active Directory, Group Policy, and networking fundamentals Practical understanding of cyber security controls, monitoring, and compliance obligations Experience working with Managed Service Providers and external vendors Excellent troubleshooting, communication, and stakeholder engagement skills Ability to work independently, manage competing priorities, and support a professional services environment Desirables Microsoft 365, security, or infrastructure certifications Experience administering Microsoft Copilot or AI‑enabled productivity tools Familiarity with backup and disaster recovery platforms Exposure to regulated or defence‑aligned environments Experience supporting engineering, design, or technical professional services teams To be considered for the role click the 'apply' button or for more information about this and other opportunities please contact Aryan Eskandari via email aeskandari@paxus.com.au and quote the above job reference number. Paxus values diversity and welcomes applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability. If you require an adjustment to the recruitment process, including the application form in an alternate format, please contact me on the above contact details.