Systems Administrator

5G Network Operations; Melbourne; On-site; AUD 90,000 - 130,000; Full time

Job summary

5GN Group is seeking a Systems Administrator to manage client IT environments and internal tooling like RMM, ensuring reliability, security and efficiency. You’ll be part of the Sysadmin team reporting to the Technical Team Leader, with mostly behind-the-scenes work and occasional client contact.

Responsibilities include incident resolution, patching, backups, monitoring, changes, and documentation, while providing clear technical guidance and automating repetitive tasks.

Qualifications

• Strong 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 virtualization, 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.
• A relevant tertiary qualification in IT or computer science, or equivalent demonstrated experience.
• Experience administering business-critical systems in a comparable environment.

Responsibilities

• 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

Skills

Windows Administration

Linux Administration

Microsoft 365

Azure

Networking basics

Scripting / automation

Education

Relevant IT tertiary qualification or demonstrated experience

Tools

Microsoft 365

Azure

RMM tooling

Ticketing systems

VMware / virtualization

Job description

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

• Strong 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 27001 compliant Information Security Management System
• A police/criminal history check is required before employment