PS Core Engineer

PT. Nexwave Indonesia is looking for an experienced PS Core Engineer with strong hands-on experience and deep technical understanding of Packet Switched (PS) Core Network. The role involves monitoring and managing PS Core Network performance, troubleshooting packet core network elements, analyzing signaling and protocol issues, and coordinating with multiple teams for end-to-end network support.

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

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 3

GPP 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

Telecommunications & Internet Service Providers 1,001-5,000 employees

Nexwave Technologies is the premier regional provider of network engineering services and supplier of specialized telecommunication products. We design, build and manage telecommunication networks and provide comprehensive suite of specialized products and cost effective solutions to address the network infrastructure need of fixed and mobile operators in Asia-Pacific.

We have diverse network experiences and excellent track records in successful implementation of GSM, GPRS, CDMA, 3G/UMTS networks. Many telecommunication service operators in the Asia Pacific region and the world’s biggest equipment vendors have made Nexwave Technologies their service partner of choice.

Our core belief of integrity, passion, and trust are the key values underlying the strong partnerships we are enjoying with our customers and business partners.

Nexwave Technologies Pte Ltd is a whole-owned subsidiary of Tele Choice International Limited.