Key Responsibilities
Design, configure, integrate, and support 4G LTE/Evolved Packet Core (EPC) and 5G Core network solutions.
Work with core network functions such as MME, SGW, PGW, AMF, SMF, UPF, AUSF, UDM, and PCF, as applicable.
Support Packet Core deployment, upgrades, migrations, integration, and network expansion activities.
Troubleshoot signalling, session establishment, mobility, connectivity, and data-plane issues.
Analyse network performance, identify root causes, and implement corrective actions.
Work with cross-functional telecom teams and vendors to resolve end-to-end mobile core network issues.
Support 5G Standalone (SA) and Non-Standalone (NSA) architecture and interworking with LTE/EPC, where applicable.
Prepare technical documentation, implementation plans, test cases, and incident reports.

Required Skills and Experience
Recent, hands-on experience with 4G LTE and/or 5G Mobile Packet Core.
Robust understanding of EPC, 5G Core architecture, network interfaces, and signalling procedures.
Experience with relevant core network functions, such as MME, SGW, PGW, AMF, SMF, and UPF.




Experience in Packet Core integration, troubleshooting, testing, deployment, or operations.
Solid telecom networking fundamentals, including IP networking and relevant control-plane and user-plane concepts.
Positive analytical, troubleshooting, and communication skills.

Preferred Skills
Experience with 5G SA/NSA, cloud-native core, virtualised network functions, or containerised network functions.
Familiarity with protocols such as GTP, Diameter, PFCP, and HTTP/2-based service interfaces, as relevant to the role.
Experience working with mobile network equipment vendors and multi-vendor telecom environments.

Important Screening Criteria
Must have: Recent, relevant 4G/5G Packet Core or Mobile Core experience.
Not required: RF, RAN, Radio Frequency, or Radio Access Network specialisation without Packet Core experience.
Candidates should demonstrate hands-on Mobile Core work rather than general telecom experience alone.

📌 4g/5g Mobile Packet Core Specialist Sydney (Australia)
🏢 Renaissance InfoSystems
📍 Australia