Infrastructure Engineer

Occom Pty Ltd; North Sydney Council; On-site; AUD 120,000 - 170,000; Full time

Job summary

Occom Pty Ltd in Australia is seeking an experienced Network & Systems Engineer to support and maintain our LAN/WAN, data centre, and security infrastructure. This hands‑on role ensures reliability and performance for business services.

You will work with Cisco and Fortinet devices, Windows and Linux servers, virtualization platforms, and contribute to infrastructure projects and continuous improvement. Strong communication and stakeholder management are essential.

Qualifications

• Minimum 5 years in infrastructure, network and systems engineering.
• Strong knowledge of TCP/IP, routing, switching, Wi‑Fi and security.
• Hands-on experience with Cisco and Fortinet technologies.
• Experience supporting enterprise Windows and Linux servers.
• Experience in data centre environments.
• Excellent troubleshooting, analytical and problem‑solving skills.
• Strong communication and stakeholder management.
• Experience in ISP/telecommunications or managed services.
• Automation or scripting using PowerShell, Python or similar.
• Strong experience in enterprise Wi‑Fi and large‑scale WLAN deployments.

Responsibilities

• Manage, configure and support LAN, WAN, Wi‑Fi, firewall, VPN, and security infrastructure.
• Install, configure, administer, and troubleshoot Cisco, Fortinet, Ruckus, and UniFi environments.
• Support and maintain Windows and Linux server environments.
• Manage and support virtualization including VMware, Hyper‑V.
• Perform data centre activities including rack and stack, cabling, patching, equipment installation, and hardware deployments.
• Monitor, maintain, and optimise infrastructure performance and availability.
• Deliver infrastructure projects, upgrades, and technology refreshes.
• Maintain technical documentation and support change management processes.
• Participate in an on‑call roster and provide incident response support.

Skills

Networking

TCP/IP

Routing & Switching

Wi‑Fi

Security

Cisco

Fortinet

Windows Server

Linux Server

Virtualization

Data centre

Troubleshooting

Communication

ISP experience

Automation scripting

PowerShell

Python

WLAN deployments

Education

Bachelor degree in IT/Networking

CCNA/CCNP

Fortinet FCP/FCSS

VMware / Microsoft certs

Tools

VMware

Hyper‑V

Ruckus

UniFi

Cisco devices

Fortinet devices

Job description

Occom is an Australian telecommunications provider with a 4.9/5 rating on Google. We provide internet, mobile and phone services to residential and business customers across Australia.

About the role

We are seeking an experienced Network & Systems Engineer to support and maintain our network, systems, wireless, security, and data centre infrastructure. This hands‑on role combines network engineering and systems administration, ensuring the reliability, security, and performance of business‑critical services. You will be responsible for supporting enterprise network and server environments, delivering infrastructure projects, maintaining data centre operations, and contributing to the continuous improvement of our technology platforms.

Key responsibilities

• Manage, configure and support LAN, WAN, Wi‑Fi, firewall, VPN, and security infrastructure.
• Install, configure, administer, and troubleshoot Cisco, Fortinet, Ruckus, and UniFi environments.
• Support and maintain Windows and Linux server environments.
• Manage and support virtualisation including VMware, Hyper‑V related technologies.
• Perform data centre activities including rack and stack, cabling, patching, equipment installation, and hardware deployments.
• Monitor, maintain, and optimise infrastructure performance and availability.
• Deliver infrastructure projects, upgrades, and technology refreshes.
• Maintain technical documentation and support change management processes.
• Participate in an on‑call roster and provide incident response support.

Skills & Experience

• Minimum 5 years' experience in Infrastructure, Network and Systems Engineering roles.
• Strong knowledge of TCP/IP, Routing & Switching, Wi‑Fi and network security.
• Hands‑on experience with Cisco, and Fortinet technologies.
• Experience supporting enterprise Windows and Linux environments.
• Experience working in data centre environments.
• Excellent troubleshooting, analytical, and problem‑solving skills.
• Strong communication and stakeholder management skills.
• Experience in ISP, telecommunications, or managed services environments.
• Automation or scripting experience using PowerShell, Python, or similar tools.
• Strong experience in enterprise Wi‑Fi and large‑scale WLAN deployments.

Qualifications

• Degree in Information Technology, Networking, Computer Science, or equivalent industry experience.
• Relevant certifications such as CCNA/CCNP, Fortinet FCP/FCSS, Microsoft, VMware, or equivalent certifications.