Systems Administrator

Following several years of uninterrupted growth, C4X Technology Architects is expanding our Sydney team and seeking an experienced, hands-on System Administrator.

We are looking for a System Administrator with 5+ years’ experience, ideally within an MSP and supporting clients in the automotive industry, who can take ownership of customer infrastructure administration, support, and continuous improvement.

You will work across Microsoft 365, Intune, Entra ID, Active Directory, Windows Server, virtualisation, networking, and endpoint management, providing escalation support and helping maintain secure, stable, and high-performing environments.

This role suits someone who has supported multiple SMB environments and is looking to broaden their experience within larger mid-market and enterprise organisations. Strong troubleshooting skills, infrastructure fundamentals, and a willingness to learn are essential.

About the Role

This is primarily an operational System Administrator role with opportunities to contribute to infrastructure projects, migrations, upgrades, and continuous improvement initiatives.

You will be responsible for maintaining customer environments, resolving escalated issues, identifying recurring problems, and implementing long-term solutions.

Key Responsibilities

• Administer and support Windows Server, including maintenance, patching, upgrades, and troubleshooting.
• Manage Active Directory, Group Policy, DNS, DHCP, Entra ID, Microsoft 365, and Intune environments.
• Support VMware and/or Hyper-V virtualisation platforms.
• Provide L3 escalation support across infrastructure, endpoint, identity, networking, and Microsoft 365 technologies.
• Monitor infrastructure health, performance, capacity, availability, backups, and security.
• Support backup, disaster recovery, and business continuity solutions.
• Troubleshoot networking technologies including switching, routing, firewalls, VPNs, and wireless environments.
• Perform Root Cause Analysis (RCA) and implement long-term solutions to recurring issues.
• Support infrastructure projects, including upgrades, migrations, technology refreshes, and change activities.
• Use PowerShell and automation tools to improve efficiency and reduce manual administration.
• Maintain accurate technical documentation, procedures, and knowledge articles.
• Collaborate with engineers, vendors, and technology partners to resolve complex issues and drive continuous improvement.
• Participate in planned maintenance and occasional after-hours support when required.