Senior Telco Network Engineer: F5 BIG-IP & GSLB Expert

XPT Software Australia; Sydney; On-site; AUD 150,000 - 210,000; Full time

Job summary

XPT Software Australia seeks a Senior Telco Network Engineer to design, operate, and optimise critical telco network services, including secure web proxy platforms and GSLB. You will ensure high availability, performance, and security across a complex multi-vendor environment.

Role focuses on F5 BIG-IP platforms, forward and reverse proxy, and secure web gateway services, with opportunities to lead changes, migrations and incident management in a global context.

Qualifications

• 10+ years in telco/networking (ISP or large enterprise).
• Hands-on F5 BIG-IP (LTM/GTM/GSLB) experience required.
• Strong knowledge of TCP/IP, HTTP/HTTPS, DNS, SSL/TLS, routing, BGP, OSPF, VRF, NAT, IPv6.
• Experience with production proxy or secure web gateway platforms.
• Experience with high-availability designs, load balancing, failover, and large-scale traffic management.

Responsibilities

• Design, deploy, administer, and troubleshoot F5 BIG-IP platforms (LTM/GTM/GSLB).
• Operate and optimise GSLB services and DNS-based traffic distribution.
• Support telco proxy and secure web gateway services (URL filtering, SSL inspection).
• Configure and maintain firewall, VPN, NAT, and high-availability architectures.
• Investigate and resolve Level 3 incidents affecting proxy, load-balancing, DNS, routing, and security.
• Lead network changes, migrations, upgrades, testing, rollback planning, validation.
• Collaborate with architecture, security, cloud, and operations teams to improve resilience and observability.
• Produce design documents, runbooks, change requests, and incident reports.

Skills

F5 BIG-IP hands-on

LTM/GTM/GSLB

TCP/IP, HTTP/HTTPS, DNS, TLS

High availability & load balancing

Incident management

Tools

FortiGate/FortiOS

VMware

OpenStack

AWS

Azure

Job description

XPT Software Australia seeks a Senior Telco Network Engineer to design, operate, and optimise critical telco network services, including secure web proxy platforms and GSLB. You will ensure high availability, performance, and security across a complex multi-vendor environment.

Role focuses on F5 BIG-IP platforms, forward and reverse proxy, and secure web gateway services, with opportunities to lead changes, migrations and incident management in a global context.