Senior Network Infrastructure Engineer

KBR, Inc.; City of Melbourne; On-site; AUD 120,000 - 180,000; Full time

Job summary

KBR, Inc. is seeking a Senior Network Infrastructure Engineer to support secure, enterprise-scale environments in a regulated setting.

You will maintain and enhance platforms across networking, servers, storage and backup, contributing to resilience, security and modernization initiatives. The role requires hands-on Cisco/Nexus/SD-WAN expertise, Palo Alto firewall experience, F5 BIG-IP, and Azure cloud networking, with Windows, Linux and VMware proficiency to ensure high availability and robust

Qualifications

• Baseline Defence Security Clearance required.
• Extensive hands-on experience with Cisco networking technologies and data centre concepts.
• Experience with Palo Alto firewalls and Azure cloud networking preferred.
• Strong understanding of network security principles and incident response.

Responsibilities

• Support and maintain enterprise infrastructure across network, server, storage, backup and virtualization platforms.
• Configure, administer and optimise Cisco networking environments including ISE, NDFC, Nexus and SD-WAN technologies.
• Manage secure network services, including Palo Alto firewalls, VPNs and remote connectivity solutions.
• Administer F5 BIG-IP load balancers and Azure cloud networking.
• Support Windows, Linux and VMware environments, ensuring high availability and security.
• Troubleshoot and resolve complex infrastructure and connectivity issues across multiple domains.
• Perform upgrades, patching, monitoring, lifecycle management and capacity planning.
• Support backup, recovery and disaster recovery testing, ensuring operational resilience.
• Contribute to incident, problem and change management processes to ensure reliable service delivery.

Skills

Security clearance

Stakeholder engagement

Troubleshooting

Documentation

Change control

Capacity planning

Tools

Cisco networking

Nexus switching

SD-WAN

Cisco ISE

VXLAN

NDFC

Leaf-Spine architectures

Palo Alto firewalls

F5 BIG-IP

Azure cloud networking

Windows Server

Linux

VMware

Job description

Title

Senior Network Infrastructure Engineer

The Opportunity

This is an opportunity to work in a senior technical role supporting secure, enterprise scale environments in a highly regulated setting. You will be responsible for maintaining and improving critical platforms across networking, servers, storage and backup technologies, while contributing to operational resilience, security and ongoing infrastructure improvement initiatives. The role offers broad exposure across enterprise technologies and the opportunity to work on complex technical challenges and high impact operational outcomes.

The successful candidate must hold a Baseline security clearance or higher.

Responsibilities

• Support and maintain enterprise infrastructure across network, server, storage, backup and virtualisation platforms.
• Configure, administer and optimise complex Cisco network environments, including Cisco ISE, Cisco NDFC, Nexus switching, Leaf-Spine architectures, VXLAN and SD-WAN technologies (Viptela and/or Meraki).
• Manage and support secure network services, including Palo Alto firewalls, VPNs and remote connectivity solutions.
• Administer F5 BIG-IP load balancing platforms and Azure cloud networking services.
• Support Windows, Linux and VMware environments, ensuring high availability, performance and security.
• Troubleshoot and resolve complex infrastructure, networking and connectivity issues across multiple technology domains.
• Perform upgrades, patching, monitoring, lifecycle management and capacity planning activities.
• Support backup, recovery, disaster recovery testing and operational resilience initiatives.
• Contribute to incident, problem and change management processes, ensuring reliable and secure service delivery.

As the ideal candidate you will bring

Required

• Australian citizenship and Baseline security clearance or higher
• Strong hands-on experience with Cisco networking technologies, including Nexus switching, Cisco ISE, SD-WAN and modern data centre networking concepts.
• Experience supporting Palo Alto firewalls and enterprise network security environments.
• Experience with F5 BIG-IP load balancers and Azure cloud networking.
• Strong knowledge of routing, switching, network segmentation, VPNs and network security principles.
• Experience supporting Windows Server, Linux and VMware environments.
• Proven ability to diagnose and resolve complex technical issues across enterprise infrastructure platforms.
• Strong understanding of operational best practices, including monitoring, patching, documentation and change control.
• Excellent communication and stakeholder engagement skills.

Desirable

• Experience within Defence, Government or other highly regulated environments.
• Exposure to enterprise storage, backup and disaster recovery technologies.
• Experience with automation and scripting tools such as PowerShell, Python, Ansible or Terraform.
• Exposure to Azure or hybrid cloud environments.

All candidates will be required to hold and maintain an active Baseline Defence Security Clearance. Only candidates holding a Baseline Clearance or above should apply.

Why Join KBR?

At KBR, our people are at the heart of everything we do. Our success is built on a culture of caring, collaboration, trust and continuous learning, where every team member feels safe, supported, valued and empowered to thrive.

We are committed to creating an inclusive environment where people can belong, connect and grow, while doing meaningful work that makes a lasting impact on communities across Australia. Through genuine collaboration and strong partnerships with our clients, we deliver innovative and sustainable solutions for a better tomorrow.

When you join KBR, you’ll become part of a team that shares common values, works together towards a common purpose, and genuinely cares about the success and wellbeing of its people.