Senior Network & Security Engineer — Hybrid & AWS Focus

hcf; Sydney; On-site; AUD 180,000 - 240,000; Full time

Job summary

HCF is seeking a Senior Network & Security Engineer to secure and optimise enterprise networks across on-prem, data centres, cloud, and branches in Australia. You will act as Tier 3 escalation point and technical authority for routing, switching, firewalls, wireless, SD‑WAN, and application delivery, owning platforms end-to-end.

Lead complex incident response, drive improvements to align with NIST and HCF standards, mentor junior engineers, and maintain documentation and runbooks.

Qualifications

• 8+ years' experience in senior network and security engineering roles within large enterprise or regulated environments.
• Strong hands-on experience with Cisco (Routing, Switching, ACI, DC, Wireless, ISE), Palo Alto, SD‑WAN, Infoblox, and F5/NGINX.
• Proven experience designing and operating AWS networking, including VPCs, Transit Gateway, and security controls.

Responsibilities

• Own and operate HCF's enterprise network and security platforms across on-prem, data centre, cloud, and branch environments.
• Provide Tier 3 support for complex incidents, including incident leadership, root cause analysis, and remediation.
• Maintain and update HCF's network systems, including lifecycle management, upgrades, and vulnerability mitigation of enterprise networks.
• Act as a technical authority for enterprise networks, availability, performance, segmentation, and secure traffic flows.
• Configure and optimise firewall policies, threat prevention, and traffic inspection.
• Support cloud and hybrid networking, with a strong focus on AWS networking.
• Apply cyber risk management practices aligned with NIST, CISM principles, and HCF standards.
• Strong stakeholder management skills and ability to independently collaborate with vendors and service providers to deliver reliable, secure outcomes.
• Mentor junior engineers and uplift engineering practices.
• Maintain clear documentation, standards, runbooks, and operational procedures.

Skills

Senior network engineering

Security engineering

Incident response leadership

Stakeholder management

Scripting: Python/PowerShell

Tools

Cisco (Routing, Switching, ACI, DC, Wireless, ISE)

Palo Alto

SD-WAN

Infoblox

F5/NGINX

AWS networking (VPCs, Transit Gateway)

Terraform/CI/CD IaC

Job description

HCF is seeking a Senior Network & Security Engineer to secure and optimise enterprise networks across on-prem, data centres, cloud, and branches in Australia. You will act as Tier 3 escalation point and technical authority for routing, switching, firewalls, wireless, SD‑WAN, and application delivery, owning platforms end-to-end.

Lead complex incident response, drive improvements to align with NIST and HCF standards, mentor junior engineers, and maintain documentation and runbooks.