Senior Systems & Network Engineer – MSP (Technical Escalations)

We are an established Managed IT Services Provider (MSP) delivering comprehensive technology solutions to small and medium-sized businesses.

Our services include managed IT support, Microsoft 365, Google Workspace, networking, cybersecurity, cloud solutions, server infrastructure, web hosting and business communications.

We pride ourselves on delivering reliable, practical IT solutions while building strong, long-term relationships with our clients.

We are looking for an experienced and proactive Senior Systems & Network Engineer to join our Melbourne technical team.

About the Role

This is a senior, hands‑on technical position combining advanced troubleshooting, infrastructure management, networking, web hosting, business communications and client support.

Based at our Cranbourne West office, you will be a key technical escalation point for our service desk team, providing guidance, assisting with complex issues and taking ownership of technical challenges.

You will work across a broad range of client environments, providing remote support and attending client sites for network installations, equipment deployments, infrastructure upgrades and troubleshooting.

A key focus of the role is ensuring client environments are secure, reliable, well‑maintained and properly documented.

We are looking for someone who is technically confident, approachable and comfortable sharing knowledge with colleagues. You should be equally capable of independently resolving complex infrastructure issues, assisting junior engineers and communicating directly with clients.

The position also offers opportunities to contribute to technical planning, service improvements and team development.





Key Responsibilities

1. Senior Technical Support & Escalations

Act as a senior technical escalation point for Level 1 and Level 2 service desk engineers.

Provide technical guidance, troubleshooting assistance and mentoring to other team members.

Independently investigate and resolve complex infrastructure, network, server and hosting issues.

Take ownership of escalated technical incidents through to resolution.

Perform root cause analysis and recommend preventative improvements.

Assist with prioritising technical issues and coordinating complex support activities.

Contribute to improved technical processes, service delivery and operational efficiency.

2. Networking & Infrastructure

Install, configure, maintain and troubleshoot business networks, routers, firewalls, switches and wireless access points.

Administer Ubiquiti UniFi environments, including gateways, managed switches, wireless networks and VLAN configurations.

Troubleshoot TCP/IP, routing, DNS, DHCP, VLANs, VPNs and network connectivity.

Configure and maintain network security, firewall rules and remote access solutions.

Investigate network performance, reliability and security issues.

Assist with network upgrades, infrastructure migrations and new office installations.

Provide onsite network equipment installation and troubleshooting.





Administer and support Linux‑based hosting environments using WHM and cPanel.

Troubleshoot hosting performance, resource utilisation and service availability.

Manage DNS, SSL certificates, email hosting and related server configurations.

Investigate Apache, Nginx, PHP, MySQL/MariaDB and common Linux hosting issues.

Assist with server migrations, account management, backups and restorations.

Perform server maintenance, patching and security‑related troubleshooting.

Work with developers and third‑party providers where application‑level issues require specialist assistance.

Administer Windows Server environments, including Active Directory, Group Policy, DNS and DHCP.

Support Microsoft 365, Exchange Online, Entra ID and related cloud services.

Troubleshoot server infrastructure, authentication, permissions and connectivity issues.

Manage and support virtualised environments, including Proxmox and Hyper‑V.

Assist with infrastructure upgrades, server migrations and current client onboarding.

Support backup, monitoring, endpoint security and disaster recovery solutions.

5. Business Phone Systems & VoIP

Install, configure, administer and troubleshoot business VoIP phone systems.

Support 3CX phone systems, including extensions, call routing, queues, ring groups and inbound/outbound calling.

Troubleshoot SIP trunk connectivity, registration issues, call quality and network‑related VoIP problems.

Assist with phone system deployments, migrations and upgrades.

Work with SIP trunk providers and telecommunications vendors to resolve service issues.

Configure and troubleshoot IP handsets and associated network infr

📌 Senior Systems (Melbourne)
🏢 Leapfrog Market
📍 Melbourne