Enterprise Network Administrator: SD-WAN & Palo Alto

GPA Engineering; Adelaide; On-site; AUD 90,000 - 120,000; Full time

Benefits offered by this job

Competitive Salary & Rewards

Career Growth & Development

Flexibility

Health & Wellbeing

Family-Friendly Benefits

Community & Culture

Giving Back

Diversity & Inclusion

Job summary

GPA Engineering is seeking a Network Administrator to support, maintain and improve our enterprise network and security across multiple sites. Working with the internal IT team, you will keep the corporate network secure, high-performing, and highly available.

Key Duties include firewall administration, SD-WAN tuning, switching, wireless, and core services such as DNS/DHCP. Strong troubleshooting and documentation skills are essential, with certifications welcomed.

Qualifications

• Demonstrated experience administering enterprise network infrastructure across multiple sites.
• Hands-on experience with Palo Alto Networks next-generation firewalls and Panorama.
• Strong grounding in network fundamentals — TCP/IP, routing, switching, VLANs, NAT, DNS, DHCP, VPN and tunnelling, and network security principles.
• Experience supporting enterprise wireless networking and wireless security.

Responsibilities

• Administer Palo Alto Networks next-generation firewalls (physical and virtual) through Panorama, including security policies, application and user-based controls, web filtering, NAT, and site-to-site and remote access VPN.
• Maintain and tune the software-defined WAN — traffic policy optimisation, performance troubleshooting, ISP transitions, office relocations, and infrastructure refresh projects.
• Administer the enterprise switching, wireless, and cellular/WAN failover environments, including routing, VLANs, layer 2 resilience, link aggregation, enterprise and guest wireless, and branch connectivity.
• Configure and maintain core network services: DNS, DHCP, certificate services, and network authentication.
• Perform firmware upgrades, security patching, licensing, and routine maintenance across all network platforms, and monitor network health and performance using enterprise and cloud-based tools.
• Respond to network incidents, perform root cause analysis, and maintain accurate documentation, diagrams, and standard operating procedures.
• Implement and maintain network security controls aligned to our certified Information Security Management System, and contribute to infrastructure and continuous improvement projects.

Skills

Enterprise network administration

Palo Alto firewalls & Panorama

SD-WAN & WAN optimization

DNS/DHCP/VLANs/TCP/IP

Network security principles

Wireless networking security

Troubleshooting & documentation

Certifications (PCNSA/PCNSE)

Microsoft server & identity infra

Cloud-based network management

Tools

Palo Alto Panorama

DNS/DHCP servers

VPN technologies

Enterprise wireless controllers

Job description

GPA Engineering is seeking a Network Administrator to support, maintain and improve our enterprise network and security across multiple sites. Working with the internal IT team, you will keep the corporate network secure, high-performing, and highly available.

Key Duties include firewall administration, SD-WAN tuning, switching, wireless, and core services such as DNS/DHCP. Strong troubleshooting and documentation skills are essential, with certifications welcomed.