Core Operations Engineer

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

Job summary

Ericsson’s Network Operations Centre (NOC) Back Office team seeks an experienced network engineer who provides deep technical expertise across packet-core, IP, security and infrastructure, supporting high-availability mobile core services.

You will lead complex investigations with customers and cross-functional teams, prepare corrective actions and system changes, mentor engineers, and participate in 24x7 rotations to protect service quality and SLA commitments.

Qualifications

• Minimum 5 years in telecommunications or IT operations.
• Strong knowledge of LTE, signaling, and network topology.
• Excellent written and spoken English.

Responsibilities

• Provide technical support across packet-core, IP, security, and infrastructure.
• Investigate and resolve complex hardware, software, performance, and service issues in live networks.
• Lead incident investigations with customers and cross-functional teams.
• Prepare and validate implementation proposals, corrective actions, system changes, and preventive maintenance.
• Represent Ericsson in technical customer meetings and contribute to performance improvements.
• Coach less-experienced engineers and promote consistent operational practices.
• Participate in emergency call-out and 24x7 support rotations.

Skills

LTE knowledge

Packet-core

TCP/IP routing

Kubernetes

English communication

Education

Degree in telecommunications/IT/engineering

Tools

Cisco technologies

Juniper

Wireshark

MRTG

Unix shell

Perl

C++

Job description

Join Ericsson’s Network Operations Centre (NOC) Back Office team and help deliver reliable, high-performing mobile core and IP network services. You will provide deep technical expertise, lead complex investigations, support customers, and improve operational performance, processes, and service quality.

You will

• 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.

To be successful in this role, you must have

• 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.

Leadership and operational excellence

• Demonstrates deep technical expertise and guides teams through complex issues.
• Communicates clearly with engineers, management, and customers.
• Builds team capability through mentoring, constructive feedback, and development support.
• Makes timely, evidence-based decisions during incidents and operational challenges.
• Owns outcomes, manages priorities, and ensures service, quality, and SLA objectives are achieved.

Additional experience that would be an advantage

• Experience with Ericsson core-network solutions, Mini-Link TN, LTE/5G eNodeB or gNodeB environments.
• Knowledge of TCP/IP WAN configuration, capacity planning, and managed-services operations.
• Scripting or programming experience in Unix shell, Perl, C++, or Visual Basic.