About the role

Support and maintain enterprise identity, PKI, and cloud infrastructure services across on-premises and cloud settings. Responsible for the administration of Windows Server, Active Directory, Microsoft Entra ID, Entra Connect, and Keyfactor Command, while supporting Azure Virtual Desktop (AVD), Nerdio, and AWS-integrated solutions. The role focuses on ensuring system availability, security, and compliance through incident management, certificate lifecycle administration, automation, monitoring, troubleshooting, and continuous service improvement.

Key responsibilities
Operate and maintain Windows Server environments - including patching, hardening, and troubleshooting
Manage PKI and certificate lifecycle - design, issue, renew, and revoke certificates; administer KeyFactor Command
Administer Active Directory and Domain Controllers - including GPOs, replication, and AD health
Support cloud identity and connectivity - Entra Connect, Entra ID, and integration with on-prem systems
Manage AWS Connect - integrations and related cloud services
Deploy and support Azure Virtual Desktop - environments and user profiles
Administer Nerdio - or AVD provisioning and management
Participate in incident response, root cause analysis, and postmortems




Automate operational tasks using scripting where appropriate
Document runbooks, run regular health checks, and provide knowledge transfer

About you
Proven experience with Windows Server administration
Solid knowledge of PKI and certificate management - experience with KeyFactor Command preferred
Hands-on Active Directory and Domain Controller experience
Experience with Entra Connect and Entra ID - configuration and troubleshooting
Familiarity with Azure AVD and Nerdio - for desktop virtualization
Experience integrating on-prem identity with cloud services
Scripting skills - for automation and operational tasks
Solid troubleshooting and incident management skills
Valuable communication skills and ability to work within cross-functional teams
NV1 security clearance must have for this role

Nice to have
VMware - administration experience.
CyberArk Machine Identity or other machine identity management experience.
Experience with AWS services.
Certifications such as Microsoft Certified - Azure Administrator, Microsoft Certified: Identity and Access Administrator, or relevant security certifications.

📌 Sr System Engineer Wintel Sydney (Australia)
🏢 Unisys
📍 Australia