A major Australian organisation is seeking a Senior Network Engineer with DDoS and automation experience to join their team on a permanent basis. Key Responsibilities Design, develop, test, and deploy complex edge and perimeter network-security infrastructure, including associated Infrastructure-as-Code. Provide expert input on network-security infrastructure patterns and standards, including the design and evolution of Layer-3/4 DDoS protection patterns, policy baselines and integration points across cloud and on-premises environments. Monitor DDoS protection posture and lead fortification and attack surface reduction efforts. Ensure alignment and synchronisation between cloud-based DDoS controls and on-premises protections. Oversee policy management, incident response and readiness, and proactive mitigation strategies. Lead the response to complex Level 3 network-security incidents, particularly across DDoS and perimeter domains (on-call support will be required). Maintain network-security patterns via Infrastructure-as-Code and automation, continuously improving existing delivery pipelines and procedures. Key Skills / Experience: DDoS Experience: Hands-on experience deploying, tuning and operating L3/L4 DDoS mitigation platforms (e.g. Akamai, Cloudflare, FortiDDoS, Radware, Arbor, Imperva, AWS etc), including policy management and operational response. Deep knowledge of TCP/IP, BGP, DNS, VPNs, firewalls and perimeter network architectures. Experience automating network-security infrastructure using tools such as Terraform, Git, Python or Ansible. Familiarity with software-defined networking overlays such as VXLAN EVPN or VMware NSX is a plus. Certifications: Relevant certifications such as CCNP, CCIE, JNCIP or Fortinet NSE. If interested please respond ASAP