SMF Test Engineer - 4G/5G Packet Core Networks

Infosys; Bengaluru; On-site; INR 800,000 - 1,200,000; Full time

Job summary

Infosys is seeking a SMF Test Engineer in Bengaluru to contribute to the validation and deployment of 4G/5G core networks. You will work hands-on with SMF and EPC components, perform protocol analyses, and ensure end-to-end call flows across LTE, NSA, and SA networks.

The role emphasizes test automation and the use of AI-assisted methods to improve quality and productivity in a Kubernetes-based environment.

Qualifications

• Strong knowledge of 4G EPC and 5G Core Packet Core networks.
• Hands-on system testing experience on 5G Core: SMF and 4G EPC: PGW/SAEGW/SGW.
• Experience deploying, configuring, troubleshooting, and validating packet core functions.

Responsibilities

• Validate packet core network functions in lab or production environments.
• Troubleshoot and resolve issues with R&D teams.
• Perform test automation from Day 1 and leverage AI tools for quality and productivity.

Skills

4G EPC

5G Core

Kubernetes

Fault analysis

Tools

Wireshark

tcpdump

Telecom test tools

Job description

SMF Test engineer

• Strong working knowledge of 4G EPC and 5G Core Packet Core networks.
• Hands-on system testing experience on one or more of the following products:
  • 5G Core: SMF
  • 4G EPC: PGW, SAEGW, SGW
• Proven experience deploying, configuring, troubleshooting, and validating packet core network functions in lab or production environments.
• Working experience in Kubernetes-based containerized environments.
• Strong understanding of end-to-end call flows, session establishment, mobility procedures, charging, policy control and subscriber management across LTE, NSA and SA networks.
• Thorough understanding of 3GPP specifications covering:
  • 5G Core Architecture and Procedures (TS 23.501, TS 23.502)
  • EPC Architecture and Procedures (TS 23.401, TS 23.402)
• Good understanding of the following protocols:
  • Protocols: PFCP, GTPv2-C, Diameter, SCTP, HTTP/2 and REST APIs
• Experience with packet analysis tools such as Wireshark/tcpdump and telecom test tools for network function validation.
• Ability to analyze logs, troubleshoot failures, and drive issues through resolution with R&D teams.
• Strong focus on test automation from Day 1.
• Ability to effectively leverage AI tools to improve quality and productivity.