Cellular Certification Testing Lead

3 days ago

Bengaluru, Karnataka, India ST-L&T Semiconductor Technologies Limited Full time ₹ 12,00,000 - ₹ 24,00,000 per year

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:
• 10 +  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). Sensitivity: This is Classified as "LTSCT Internal Use".  

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