Core Network Operations Engineer — LTE & IP NOC Specialist

Ericsson; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

Ericsson in Sydney, Australia, is seeking a senior NOC engineer for its Back Office team to deliver reliable, high-performing mobile core and IP network services. This role focuses on supporting packet-core, IP, security, and infrastructure, with responsibilities spanning incident handling, change management, and customer-facing collaboration.

You will investigate and resolve complex network issues, lead incidents with cross-functional teams, and prepare implementation proposals while ensuring

Qualifications

• A degree or equivalent experience in telecommunications, information technology, computer engineering, or a related field.
• At least five years of experience in telecommunications, IT operations, network engineering, or a similar environment.
• Strong knowledge of LTE and dual-mode core networks, packet-core elements, signaling, and network topology.
• Understanding of LTE protocols, including IP, S1AP, SCTP, GTP, Diameter, LDAP, and SOAP.
• Strong TCP/IP and routing knowledge, including MPLS, OSPF, BGP, IS-IS, EVPN, GRE, VRRP, and QoS.
• Experience troubleshooting routers, switches, firewalls, load balancers, and Linux-based systems.
• Excellent knowledge of Kubernetes architecture and operations in a core-network environment.
• Experience with Cisco technologies; knowledge of Juniper, Ericsson-Redback, F5, Wireshark, or MRTG is an advantage.
• Proven complex-problem-solving ability and strong written and spoken English communication skills.
• Customer focus, analytical thinking, planning, collaboration, and the ability to perform under pressure.
• Willingness to work shifts, on-call assignments, and other hours required by the operation.

Responsibilities

• Provide technical support across packet-core, IP, security, and infrastructure environments.
• Investigate and resolve complex hardware, software, performance, and service issues in live networks.
• Lead incident investigations with customers, system design, support, front-office, project, and field teams.
• Prepare and validate implementation proposals, corrective actions, system changes, and preventive maintenance activities.
• Represent Ericsson in technical customer meetings and contribute to network-performance improvements.
• Support service, incident, customer, project, process, security, audit, and operational reporting activities.
• Coach less-experienced engineers and promote consistent operational practices.
• Prioritize work and make timely decisions that protect service quality, availability, and SLA commitments.
• Participate in emergency call-out and 24x7 support rotations as required.

Skills

LTE knowledge

TCP/IP routing

Kubernetes

Linux

English communication

Incident management

Leadership

On-call readiness

Education

Degree in telecommunications/IT/computer engineering

Tools

Cisco

Juniper

Wireshark

F5

MRTG

Ericsson-Redback

Job description

Ericsson in Sydney, Australia, is seeking a senior NOC engineer for its Back Office team to deliver reliable, high-performing mobile core and IP network services. This role focuses on supporting packet-core, IP, security, and infrastructure, with responsibilities spanning incident handling, change management, and customer-facing collaboration.

You will investigate and resolve complex network issues, lead incidents with cross-functional teams, and prepare implementation proposals while ensuring