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.
Required Skills
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.
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.
Desirable Skills
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.
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 robust 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.
KBR — Delivering Solutions, Changing the World.
KBR brings together the best and brightest to deliver science, technology and engineering solutions that help governments and companies around the world accomplish their most critical missions and objectives.
In everything we do, we are guided by our ONE KBR Values: We Value Our People – We create diverse, inclusive environments in which each person can feel safe, respected and valued, and where everyone has opportunities to grow and reach their full potential.
We Deliver – We are uncompromising in our commitment to deliver innovative, high-quality, technology-led solutions for our customers and exceptional, sustainable value for all our stakeholders.
We Are People of Integrity – We value honesty, trust, courage, fairness, prudence and tenacity.
We believe doing what's right for the planet, the communities where we work, and our people is good for business.
We Empower – We empower our people with a shared purpose, the right tools and the supportive culture they need to be proactive decision-makers, to be adaptive to change, and to succeed.
We Are a Team of Teams – We have a will to succeed, but we value the achievements of our team of teams over individual accomplishments.
Our collective focus makes us a better, stronger, more effective company.
We have also embedded environmental, social and governance (ESG) principles in every business operation and corporate function.
Not only are we committed to operating safely, sustainably and equitably, but we are also committed to using our capabilities and expertise to help our customers accomplish their sustainability goals.
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📌 Senior Network Infrastructure Engineer (Melbourne)
🏢 Kbr
📍 Melbourne