Senior Network & Security Engineer — Cloud & Firewalls

HCF group; Sydney; Hybrid; AUD 150,000 - 190,000; Full time

Benefits offered by this job

Flexible working arrangements

Mental health and wellbeing programs

18 weeks of parental leave

Job summary

HCF is seeking a Senior Network & Security Engineer to own and operate enterprise networks across on‑prem, data centre, cloud, and branch environments. You will lead complex incidents and drive improvements aligned with NIST/CISM principles and HCF standards.

You will mentor juniors, maintain runbooks and documentation, and collaborate with vendors to ensure secure, reliable outcomes in a complex, regulated setting.

Qualifications

• 8+ years in senior network and security roles in large enterprise or regulated environments.
• Hands-on experience with Cisco, Palo Alto, SD-WAN, Infoblox, and F5/NGINX.
• Experience designing and operating AWS networking (VPCs, Transit Gateway, security controls).
• Understanding of hybrid cloud networking (AWS/Azure) and network security/compliance.
• Strong scripting: Python and/or PowerShell; IaC experience with Terraform.

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 lifecycle management, upgrades, and vulnerability mitigation of enterprise networks.
• Act as technical authority for network 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.

Skills

Cisco Routing & Switching

Palo Alto

SD-WAN

AWS Networking

Network Security

Python

PowerShell

IaC Terraform

Vulnerability Management

Incident Response

Documentation

Stakeholder Management

Education

Bachelor's degree in IT/Computer Science

CCNP

PCNSE

AWS Solutions Architect

Tools

Cisco IOS

Infoblox

F5/NGINX

AWS VPC

Transit Gateway

Job description

HCF is seeking a Senior Network & Security Engineer to own and operate enterprise networks across on‑prem, data centre, cloud, and branch environments. You will lead complex incidents and drive improvements aligned with NIST/CISM principles and HCF standards.

You will mentor juniors, maintain runbooks and documentation, and collaborate with vendors to ensure secure, reliable outcomes in a complex, regulated setting.