Cellular Certification Testing Engineer(4G/5G)

3 weeks ago

Bengaluru, Karnataka, India L&T Semiconductor Technologies Full time

Job Title: 4G/5G Cellular Certification Testing & Automation Testing Engineer.

Location: Bangalore

Experience: 4 to 8 Years

Join Time: Immediate to 30 Days.

Job Summary:

We are seeking a skilled 4G/5G Cellular Certification Testing Engineer with experience in both manual and automation testing for cellular protocols, along with hands-on expertise in certification processes such as PTCRB, GCF, FCC , and carrier certifications (e.g., Verizon, AT&T, T-Mobile). The candidate will be responsible for leading device testing, automation framework development, and managing end-to-end certification cycles.

Key Responsibilities:

  • Perform manual and automated testing of 4G/5G protocol, RF, and application-level functionalities.
  • Lead and execute certification testing processes including PTCRB, GCF, FCC , and carrier certifications (AT&T, Verizon, TMO, etc.).
  • Design and implement automation test scripts and frameworks for cellular device testing (using Python or other scripting languages).
  • Conduct regression, stability, IOT (Interoperability Testing), and field testing using test tools and automation setups.
  • Debug and analyze logs using QXDM, QCAT, QTRACE, Wireshark , and similar tools.
  • Collaborate with cross-functional teams including development, QA, certification labs, and carrier teams to address and resolve test issues.
  • Maintain detailed documentation for test plans, test cases, defect logs, and certification reports.
  • Stay up to date with the latest 3GPP standards , carrier requirements, and certification processes.

Required Skills & Experience:

  • 4 to 8 years of hands-on experience in 4G/5G mobile device testing and certification.
  • Experience with PTCRB, GCF, FCC , and at least one US carrier certification process .
  • Strong understanding of LTE, LTE-A, 5G NR (NSA/SA), VoLTE, VoNR technologies.
  • Proficiency in using test tools such as Anritsu, Keysight, R&S, Spirent , etc.
  • Experience with automation testing frameworks and scripting languages (preferably Python , but Shell, Perl, or JavaScript also valued).
  • Hands-on experience with log analysis tools (QXDM, QCAT, etc. ) and debugging protocol/RF issues.
  • Good understanding of 3GPP protocol stack , network signaling, and call flows.

Preferred Qualifications:

  • Experience working with major chipset vendors (Qualcomm, MediaTek, etc.).
  • Prior work on test automation frameworks for embedded/mobile device testing.

Knowledge of test case management tools and CI/CD tools (Jenkins, Git)

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