Senior 5G Core Support Engineer — L2/L3 Incident Lead

Ericsson; Sydney; On-site; AUD 120,000 - 190,000; Full time

Job summary

Ericsson AB is seeking a knowledgeable Support Engineer to join a small IMS support team focused on 5G Core and Cloud Core for NACI customers in Sydney. The role owns complex incidents, improves live network stability and works with product and problem management to reduce outages.

You will lead investigations, troubleshoot, and collaborate on safe CCxx release implementations while maintaining strong customer communication and on-call readiness.

Qualifications

• Deep IMS knowledge with 5G Core components and call flows.
• Experience with VoLTE/VoWiFi and interconnect scenarios.
• Strong troubleshooting across L2/L3 incidents in IMS environments.

Responsibilities

• Lead investigations and resolve complex L2/L3 incidents.
• Restore services during critical outages and perform fault isolation.
• Collaborate with product/project teams for safe release of CCxx updates.
• Document runbooks and share knowledge to reduce MTTR.
• Support on-call rotations and drive continuous improvement.

Skills

IMS Architecture

VoLTE/VoWiFi

SIP/SDP

Diameter

IP Networking

Linux

Cloud/VMware

Kubernetes

Scripting Bash

Incident Management

Education

Bachelor's in Telecommunications/CS

Tools

tcpdump

Wireshark

Grafana/Prometheus

NMS/EMS

OpenStack

Job description

Ericsson AB is seeking a knowledgeable Support Engineer to join a small IMS support team focused on 5G Core and Cloud Core for NACI customers in Sydney. The role owns complex incidents, improves live network stability and works with product and problem management to reduce outages.

You will lead investigations, troubleshoot, and collaborate on safe CCxx release implementations while maintaining strong customer communication and on-call readiness.