vEPC System Test Engineer
Bangalore, India
2 months ago

We are Mavenir.

As a trusted partner, Mavenir accelerates and redefines network transformation for Service Providers. By offering a comprehensive product portfolio across every layer of the network infrastructure stack.

From 5G application / service layers to packet core and RAN Mavenir leads the way in evolved, cloud-proven networking solutions enabling innovative and secure experiences for end users.

Through its industry first VoLTE, VoWiFi, Advanced Messaging and Cloud RAN solutions, Mavenir’s platform enables Service Providers to successfully deliver tomorrow’s vision today and realize new revenue streams.

Role Summary

Member of system test team focused on testing Mavenir virtualized EPC nodes

Key Responsibilities :

  • Going through 3GPP standards, architectural and design documents to come up with thorough and in-depth test plans for testing LTE EPC node functionalities.
  • Creating test scripts using available test tools. This will involve getting familiarized with the test tools and figuring out innovative ways of re-
  • creating practically possible scenarios

  • Ability to build test setups as per the requirements of the test case and environment
  • Executing test cases and validating the test status based on the expectations for the test case.
  • Ability to fully understand system logs, test tool logs and use this understanding for debugging issues and identifying accurate root causes for the problems seen on the system under test or in the network
  • Using the test expertise and identifying overall improvements and enhancements
  • Debugging field data like logs, Wireshark traces and identifying potential problems and re-creating the same in the lab
  • Other duties as assigned.
  • Job Requirements :

  • Self-starter who likes debugging complex issues and takes pride in finding issues on the device under test
  • In-depth knowledge of LTE Access and Core domain
  • Thorough understanding of 3GPP specs covering S1AP, NAS, GTPv1, GTPv2 protocols
  • Good understanding and working knowledge of Layer 2 and Layer 3 protocols
  • Strong skills on IP, TCP, Linux and UNIX
  • Good working knowledge of RADIUS and DIAMETER protocols.
  • Good working knowledge of Gx, Gy and Gz
  • Good working knowledge of PCRF, OCS and diameter based charging and policy control
  • Good working knowledge of Layer 2 and Layer 3 protocols
  • Hands on work experience of testing MME, SGW, PGW and SAEGW
  • Hands on experience in using test tools including but not limited to
  • o UE and Core Node Simulators like Spirent Landslide, EAST and NG4T

    o Application traffic generators like iPerf, IxLoad etc

  • Knowledge of message flows and parameters used in the messages for LTE procedures
  • Understanding of latest LTE Release features like NB-IoT, 5G
  • Good understanding of open stack and container based virtualized environments
  • Good understanding of Network Function Virtualization concepts
  • Good understanding and working experience with scripting languages like Python and Tcl to write and debug scripts.
  • What We Offer?

    Working with a friendly and encouraging team of colleagues, this role offers a huge potential of professional growth.


    Mavenir is committed to working with and providing reasonable accommodation to individuals with physical and mental disabilities.

    If you require any assistance, please state in your application or contact your recruiter.

    Mavenir is an Equal Employment Opportunity (EEO) employer and welcomes qualified applicants from around the world, regardless of their ethnicity, gender, religion, nationality, age, disability, or other legally protected status.

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