Network Security Engineer AUSTRALIA ONLY

Network Security Engineer
Location: Sydney NSW
Experience: 7 years
Employment Type: Full-time

About the Role

We are looking for an experienced Network Security Engineer to design implement and support enterprise data center and cloud network infrastructure. The ideal candidate brings deep hands-on expertise across leading networking and security platforms including Arista Cisco Juniper Palo Alto and F5 along with strong routing protocol knowledge (BGP OSPF) and experience securing and scaling networks across on-premises data centre and cloud environments.

Key Responsibilities

• Design configure and maintain enterprise and data centre network infrastructure using Arista Cisco and Juniper platforms.
• Deploy and manage security appliances including Palo Alto and Cisco firewalls and F5 load balancers (LTM/GTM).
• Configure and troubleshoot BGP and OSPF routing across enterprise and data centre environments.
• Perform firewall policy reviews rule implementation and security change management.
• Support network connectivity and security integration for cloud environments (AWS/Azure/GCP).
• Diagnose and resolve complex routing switching firewall and load balancer issues.
• Support enterprise infrastructure projects including data centre builds and workload migrations.
• Collaborate with infrastructure cloud and application teams to ensure secure reliable and scalable network services.
• Maintain network documentation diagrams and standard operating procedures.
• Participate in on-call/escalation support for critical network and security incidents.

Required Skills & Experience

• 7 years of experience in Network Security or Network Engineering roles.
• Strong hands-on experience with Arista Cisco Juniper and Palo Alto platforms.
• Solid experience with F5 load balancers and other security appliances (firewalls proxies).
• Strong working knowledge of BGP and OSPF routing protocols.
• Proven experience across enterprise networks data centre (DC) networks and cloud networking environments.
• Solid understanding of TCP/IP switching VLANs NAT VPNs and core network security fundamentals.
• Strong troubleshooting root-cause analysis and analytical skills.
• Exposure to enterprise infrastructure data centre builds or cloud workload migration projects.

Preferred

• Relevant vendor certifications (e.g. CCNP/CCIE JNCIP/JNCIE PCNSE F5 CTS).
• Experience working in large complex enterprise environments.
• Excellent communication and stakeholder management skills.