Packet Core Engineer (4G EPC & 5G SA Core) | Path Infotech | Singapore

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

Job Title

Job Title: Packet Core Engineer (4G EPC & 5G SA Core) | Path Infotech | Singapore

Recruiting Company: Path Infotech
Job Location: Singapore (Onsite)
Job Type: Contract (12 Months)
Application Method: Email CV to [e-mail]
Additional Info: Onsite role; telecom core network expertise required; 24×7 standby support responsibilities included

Position Summary

Path Infotech is seeking an experienced Packet Core Engineer to support the operation, maintenance, troubleshooting, and deployment of advanced 4G EPC and 5G Standalone Core networks in Singapore. This role is critical to ensuring network stability, service availability, and successful implementation of next‑generation mobile core technologies.

Detailed Job Description

As a Packet Core Engineer, you will be responsible for supporting and optimizing EPC and 5G SA Core network environments, with particular focus on Nokia core network products and cloud‑native architectures. You will perform troubleshooting, KPI analysis, alarm management, acceptance testing, and production network implementations while ensuring high service reliability. The role requires strong expertise in packet core signaling flows, Kubernetes‑based deployments, routing concepts, and modern voice services such as VoLTE, VoNR, and VoWiFi. You will work closely with vendor support teams, operations teams, and stakeholders to resolve complex network issues and support new service deployments. This is an excellent opportunity for telecom professionals looking to contribute to cutting‑edge mobile core network projects.

Key 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 24×7 emergency standby and incident support activities

Required Qualifications & Skills

• Strong knowledge of 4G EPC Packet Core and 5G Standalone Core architectures
• Thorough understanding of core network signaling procedures and service flows
• 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 cloud‑native network function (CNF) deployments
• Understanding of IP routing principles and telecom networking fundamentals
• Experience supporting VoLTE, VoNR, and VoWiFi solutions
• Ability to execute acceptance testing and production network implementations
• Strong communication and stakeholder management skills

Nice‑to‑Have Skills

• Experience with containerized telecom platforms and NFV environments
• Knowledge of CI/CD and automation within cloud‑native telecom environments
• Experience supporting Tier‑1 mobile network operators
• Familiarity with telecom orchestration and cloud management platforms
• Nokia certifications in Packet Core, Cloud, or 5G technologies

Recruitment Pro Tip

For Packet Core roles, highlight specific EPC and 5G Core projects you’ve supported, including AMF, SMF, and UPF troubleshooting scenarios, successful VoLTE/VoNR deployments, Kubernetes‑based CNF implementations, and measurable improvements in network stability or service performance.