12-month contract
Security Clearance Required
Hybrid working environment
Senior Network Engineer
The Organisation
Our client is a large, highly regulated organisation undertaking a significant technology transformation program focused on strengthening and modernising its enterprise infrastructure, network services, security capabilities, and cloud connectivity.
As part of this journey, they are seeking an experienced
Senior Network Engineer
to support and enhance critical network services across a complex enterprise setting.
The Opportunity
We are seeking a hands-on
Senior Network Engineer
to join a high-performing infrastructure team on an initial
6-month contract
, with
6-month extension
.
This role is focused on the ongoing support, maintenance, optimisation, and continuous improvement of enterprise network infrastructure spanning corporate offices, data centres, and cloud environments.
You will work closely with infrastructure, security, and operations teams to ensure network services remain secure, reliable, and highly available.
Key Responsibilities
Provide Level 2 and Level 3 support for enterprise networking environments.
Monitor, maintain, and troubleshoot LAN, WAN, wireless, and data centre networks.
Diagnose and resolve network incidents, performance issues, and service disruptions.
Support firewalls, routing, switching, load balancing, and network security platforms.
Perform network upgrades, patching, lifecycle management, and maintenance activities.




Support hybrid infrastructure environments across both on-premises and Microsoft Azure platforms.
Manage incidents, service requests, problems, and changes in alignment with ITIL best practices.
Conduct root cause analysis and maintain high-quality technical documentation.
Drive network service improvements and operational excellence initiatives.
Required Skills & Experience
Proven experience as a
Senior Network Engineer
within large enterprise environments.
Strong hands-on experience with:
Cisco Routing & Switching
Cisco Nexus environments
Fortinet Firewall technologies
TCP/IP, BGP, OSPF, VLANs
Enterprise WAN technologies
Wireless networking and controllers
Demonstrated experience supporting complex production environments and critical infrastructure.
Strong troubleshooting, analytical, and problem-solving capabilities.
Experience working within ITIL-based operational environments.
Excellent stakeholder engagement and communication skills.
Highly Desirable
FortiManager and FortiAnalyzer.
Cisco ISE and Cisco DNA Center.
F5 Load Balancing platforms.
Azure networking and hybrid cloud connectivity experience.
Experience within financial services, government, or other highly regulated environments.
What's on Offer
Opportunity to work within a large-scale enterprise technology environment.
Exposure to modern networking and cloud technologies.
Hybrid working arrangements.
Collaborative and supportive team culture.
Long-term contract opportunity with extension potential.
Attractive daily rate.
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📌 Senior Network Engineer (Sydney)
🏢 Teksystems
📍 Sydney