Systems Administrator

Benefits

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Non-birth-parent leave

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Family-building benefits

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Mental health support

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Relocation assistance

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Childcare support

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Learning budget

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Schedule

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Weekend work

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Application

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Deadline

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About this role

Systems Administrator Sydney, Australia ROLE SUMMARY The Systems Administrator plays a critical role in maintaining and securing the IT infrastructure that supports Firmus' business operations across regional offices. Reporting directly to the Chief Technology Officer (CTO), this position is responsible for the day-to-day administration of servers, network systems, endpoints, cloud services, and enterprise platforms. The role requires a strong hands-on background in system administration, hybrid Active Directory environments, cybersecurity enforcement, and end-user support. The Systems Administrator also contributes to strategic technology initiatives, including infrastructure modernisation, security posture improvements, and operational efficiency projects. This position demands a proactive, detail-oriented individual with the ability to manage complex systems, provide high-quality support, and collaborate effectively across departments and with external vendors. KEY RESPONSIBILITIES - Senior technical for Firmus corporate IT environment, supporting regional operations across Australia and Singapore, with accountability for stability, security, and continuous improvement. - Administer and maintain corporate infrastructure and platforms, including Windows and Linux servers, virtualisation platforms (VMware, Hyper-V, Proxmox), storage systems, and core corporate services. - Design, implement, and operate identity, access, and endpoint management across the organisation using Microsoft 365, Entra ID (Azure AD), Intune, and Hybrid Active Directory, ensuring consistent security baselines and least-privilege access. - Own and continuously improve endpoint security and threat detection, leveraging Cortex XDR, MFA, and vulnerability management practices in alignment with Firmus security standards. - Support and maintain corporate security systems, including Milestone VMS and Inner Range access control, ensuring reliable and secure physical access operations. - Manage backup, recovery, and

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