Senior PS Core Engineer - 4G Packet Core & Troubleshooting

PT NexWave; Tangerang; On-site; IDR 360,000,000 - 660,000,000; Full time

Job summary

Nexwave Technologies Indonesia is seeking an experienced PS Core Engineer to monitor, troubleshoot, and optimize the PS Core network. You will analyze signaling, traffic, and KPIs, coordinating with NOC, RAN, and other teams for end-to-end support.

The role demands hands-on PS Core operation experience, strong knowledge of GGSN/SGSN and MME/SGW/PGW, and the ability to work under pressure in a 24/7 operational environment.

Qualifications

• Bachelor's degree in Telecommunication, Electrical Engineering, Computer Engineering, or related field.
• Minimum 3-5 years of experience in PS Core / Packet Core Network.
• Strong hands-on experience in PS Core operation, troubleshooting, and performance analysis.
• Strong knowledge and hands-on experience in GGSN / SGSN for 2G/3G Packet Core.
• Strong knowledge and hands-on experience in MME, SGW, PGW for 4G EPC.
• Strong understanding of 3GPP PS Core architecture and signaling.
• Familiar with key interfaces and protocols: Gn / Gp, S1-MME, S11, S5/S8, S6a, S1-U, Gx / Gy, Diameter, GTP-C / GTP-U, DNS, SIP / TCP / UDP.
• Able to understand and analyze signaling flow and packet flow.
• Experience with Wireshark / packet capture analysis is highly preferred.
• Understanding of APN, PDP Context / EPS Bearer, Attach, TAU, Service Request, Dedicated Bearer, and Session Management.
• Familiar with LTE/EPC architecture and interworking between RAN, Core, and Transport/IP networks.
• Experience with Huawei PS Core is highly preferred.
• Experience working in a Telecommunication Operator or Vendor environment.
• Strong analytical and problem-solving skills.
• Good communication and coordination skills.
• Able to work under pressure and handle major network incidents.
• Willing to work in a 24/7 operational environment if required.

Responsibilities

• Monitor and manage PS Core Network performance, availability, and service quality.
• Perform troubleshooting and fault isolation for Packet Core network elements and services.
• Analyze signaling, protocol, KPI, alarm, and traffic issues related to PS Core.
• Handle incidents involving data services, mobility, session management, and packet connectivity.
• Perform Root Cause Analysis (RCA) for PS Core incidents and recurring issues.
• Analyze signaling and traffic flows to identify issues across different network interfaces.
• Coordinate with NOC, RAN, Transport, IP, Transmission, Vendor, and Customer teams for end-to-end troubleshooting.
• Support configuration, integration, optimization, and troubleshooting of PS Core network elements.
• Monitor and analyze key PS Core KPIs, traffic trends, capacity, and service performance.
• Support network expansion, migration, upgrade, and implementation activities.

Skills

PS Core ops

Troubleshooting

GGSN/SGSN

MME/SGW/PGW

3GPP PS Core

Gn/Gp

Wireshark

APN context

LTE/EPC interwork

Network incidents

Cross-team coord

Education

Bachelor's degree in Telecommunication/EE/CE

Tools

Wireshark

Job description

Nexwave Technologies Indonesia is seeking an experienced PS Core Engineer to monitor, troubleshoot, and optimize the PS Core network. You will analyze signaling, traffic, and KPIs, coordinating with NOC, RAN, and other teams for end-to-end support.

The role demands hands-on PS Core operation experience, strong knowledge of GGSN/SGSN and MME/SGW/PGW, and the ability to work under pressure in a 24/7 operational environment.