Location: Canberra, Sydney, Melbourne
Job Type: Contract / Full-time
Clearance: NV1, NV2, or TSPV (required)
Cleared Professional Services is expanding its infrastructure capability to support mission-critical environments across Federal Government, Defence, and National Security clients.
We are seeking experienced Systems Administrators, Systems Engineers, and Infrastructure Engineers with deep expertise in Microsoft/Windows platforms and VMware virtualisation.
You will design, support, and optimise secure enterprise infrastructure systems, ensuring reliability, performance, and compliance within highly classified environments.
Access to structured training, labs, and certification support
Opportunity to build advanced VMware and Microsoft capability
Work on high-impact, mission-critical Defence and Federal Government programs
Salary packaging options + novated leasing
Industry-leading contract rates
Long-term career growth in secure environments
Administer and support Windows Server, Active Directory, Group Policy, DNS, DHCP, PKI, and enterprise Microsoft services
Manage and maintain VMware infrastructure, including vSphere, ESXi hosts, clusters, and virtual environments
Perform patching, upgrades, hardening, and lifecycle management of Windows and VMware platforms
Troubleshoot complex infrastructure issues across compute, storage, networking, and virtualisation layers
Ensure adherence to ASD ISM, Defence security requirements, and ICT compliance standards
Produce clear technical documentation, system designs, and operational procedures
Collaborate with cross-functional teams to deliver secure, reliable systems
Provide mentorship and technical guidance to junior engineers when required
Strong hands-on experience administering Windows Server and core Microsoft infrastructure
Solid VMware experience – vSphere, ESXi, vCenter (NSX-T or vSAN beneficial but not mandatory)
Knowledge of storage, networking, and virtualisation architecture
Experience supporting secure environments, ideally Defence or Federal Government
Familiarity with automation or scripting tools (PowerShell, Ansible, Terraform – advantageous)
Strong communication and documentation skills
Bachelor’s degree in IT, Engineering, or related field
Microsoft certifications (MCSA, MCSE, AZ-104, etc.)
VMware certifications (VCP, VCAP preferred)
We value diverse backgrounds and are committed to building inclusive teams.
Veterans and applicants with Defence experience are strongly encouraged to apply