Defence ICT Systems Administrator

Leidos LLC; Canberra; On-site; AUD 110,000 - 170,000; Full time

Job summary

Leidos Australia is seeking a Systems Administrator to support a strategically important Defence capability. You will administer Windows Server, Linux, virtualization, and VDI environments across multiple projects, ensuring secure, reliable service delivery and compliance with ISM controls.

You will collaborate with Defence stakeholders, technical teams and vendors to support interoperability, Link 16 design activities, and ongoing technology refresh.

Qualifications

• Experience administering Windows Server and Linux in complex enterprise ICT environments.
• Strong knowledge of Active Directory, Group Policy, DNS and DHCP across multiple domains.
• Experience with enterprise server, desktop and infrastructure platforms in medium to large organisations.
• Experience with Hyper‑V and VMware ESX for VM provisioning and lifecycle management.
• Experience with Horizon, Citrix VAD, or similar VDI technologies.
• Experience with storage, backup and recovery (NetApp, Veeam).
• Strong analytical and problem‑solving skills across IT infrastructure.
• Excellent written and verbal communication with Defence stakeholders.
• Understanding of government ICT security requirements and ISM controls.

Responsibilities

• Support and administer enterprise Windows Server, Linux, virtualization and VDI in a multi‑project Defence program.
• Maintain infrastructure including AD, VMware ESX/Hyper‑V, Horizon, Citrix VAD, storage and backup solutions.
• Collaborate with Defence stakeholders, vendors and project teams to meet interoperability and security requirements.
• Contribute to disaster recovery, cyber security compliance and ongoing improvement initiatives.

Skills

Windows Server

Linux

Active Directory

Group Policy

DNS/DHCP

VMware ESX

Hyper‑V

Citrix Virtual Apps and Desktops

NetApp storage

Veeam Backup & Replication

Security/compliance

Tools

Omnissia Horizon

Citrix Virtual Apps and Desktops

MECM/SCCM

Azure/AWS (certs)

Job description

Leidos Australia is seeking a Systems Administrator to support a strategically important Defence capability. You will administer Windows Server, Linux, virtualization, and VDI environments across multiple projects, ensuring secure, reliable service delivery and compliance with ISM controls.

You will collaborate with Defence stakeholders, technical teams and vendors to support interoperability, Link 16 design activities, and ongoing technology refresh.