5GN Group is a collective of companies, including 5G Networks, a licensed telecommunications carrier providing network and data centre services across Australia and internationally, and AUCyber, a Managed Service Provider (MSP) and Managed Security Service Provider (MSSP) for mid-market corporate and government clients.
We believe every organisation, whatever its size, should have access to secure, fit-for-purpose IT and telecommunications.
Our team is guided by honesty, integrity, respect, collaboration, reliability and perseverance.
About the role
As Systems Administrator, you'll keep our customers' IT environments, and our own internal tooling such as RMM (Remote Monitoring and Management), reliable, secure and efficient.
You'll sit in the Sysadmin team and report to the Technical Team Leader.
The role is mostly behind the scenes supporting systems, with a small amount of customer contact.
What you'll do
Manage user accounts, groups, permissions and privileged access, following least-privilege principles
Diagnose and resolve incidents and service requests within agreed SLAs, escalating complex or high-risk issues
Apply security patches, endpoint controls and configuration standards, remediate vulnerabilities, and help respond to security incidents
Monitor backups, triage failures and warnings, and deploy backup systems for customers using standard deployment guides
Triage monitoring alerts by priority and tune monitoring metrics
Plan, test, document and implement changes, upgrades, migrations and projects with minimal disruption




Maintain system diagrams, procedures, inventories and audit evidence
Give clear technical advice and guidance to colleagues and customers
Automate repeatable tasks and recommend practical improvements to our services and controls
About you
Solid administration skills across Windows and/or Linux server environments
Hands-on experience with Microsoft 365, Azure or comparable cloud and identity platforms
Working knowledge of TCP/IP, DNS, DHCP, VPNs, firewalls and wireless
Familiarity with MSP tooling such as RMM, and its integrations with ticketing and documentation systems
Experience with virtualisation, backup, endpoint management, monitoring and security tools
Scripting or automation skills (PowerShell, Bash)
Methodical troubleshooting, risk assessment and root-cause analysis
Clear written and verbal communication, including explaining technical matters to non-technical people
Good organisation and prioritisation, and sound judgement under pressure
A relevant tertiary qualification in IT or computer science, or equivalent demonstrated experience
Experience administering business-critical systems in a comparable environment
Nice to have
Industry certifications such as Microsoft, CompTIA, Cisco or ITIL
Experience with service management practices, change control and security frameworks
Good to know
We operate under an ISO ***** compliant Information Security Management System
A police/criminal history check is required before employment
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📌 Systems Administrator (Melbourne)
🏢 5G Network Operations
📍 Melbourne