Packet Core Engineer — 4G/5G Core, Onsite, 24x7 Standby

Path Infotech; Singapore; On-site; SGD 110,000 - 170,000; Part time

Job summary

Path Infotech is seeking an experienced Packet Core Engineer to support the operation, maintenance, troubleshooting, and deployment of 4G EPC and 5G Standalone Core networks in Singapore. The role focuses on Nokia core products, cloud-native architectures, and ensuring service stability for mobile users.

You will perform KPI analysis, alarm management, acceptance testing, and production deployments, while collaborating with vendor and operations teams.

Qualifications

• Strong knowledge of 4G EPC Packet Core and 5G Standalone Core architectures.
• Hands-on experience with Nokia CMM (AMF), CMG (SMF/UPF), and NRD platforms.
• Strong troubleshooting and fault isolation capabilities in telecom core networks.
• Experience analyzing alarms, KPIs, and performance-related issues.
• Good knowledge of Kubernetes and CNF deployments.
• Understanding of IP routing principles and telecom networking fundamentals.
• Experience supporting VoLTE, VoNR, and VoWiFi solutions.

Responsibilities

• Operate, maintain, and troubleshoot 4G EPC and 5G SA Core network platforms.
• Analyze core network KPIs, alarms, and performance metrics to ensure optimal service quality.
• Support Nokia core products including CMM (AMF), CMG (SMF/UPF), and NRD platforms.
• Investigate and resolve network faults affecting packet core services.
• Perform Kubernetes and CNF deployment, administration, and troubleshooting activities.
• Open and manage vendor support tickets and follow through to issue resolution.
• Prepare Method of Procedure (MOP) documents for network activities and upgrades.
• Execute acceptance testing and support production implementation activities.
• Support voice services including VoLTE, VoNR, and VoWiFi platforms.
• Work with routing, connectivity, and interworking components within the core network.
• Collaborate with cross-functional engineering and operations teams.
• Participate in 24x7 emergency standby and incident support activities.

Skills

4G EPC Packet Core

5G Standalone Core

Nokia CMM AMF

Nokia CMG SMF/UPF

NRD platform

Kubernetes CNF deployments

Core network troubleshooting

KPI analysis & alarm management

VoLTE/VoNR/VoWiFi support

SRE/incident support

Tools

Nokia CMM

Nokia CMG

NRD platforms

Kubernetes

Job description

Path Infotech is seeking an experienced Packet Core Engineer to support the operation, maintenance, troubleshooting, and deployment of 4G EPC and 5G Standalone Core networks in Singapore. The role focuses on Nokia core products, cloud-native architectures, and ensuring service stability for mobile users.

You will perform KPI analysis, alarm management, acceptance testing, and production deployments, while collaborating with vendor and operations teams.