Tech lead

LTTS · Bangalore

Source and collection record

Last observed by our collector: 8 October 2026 at 11:41 pm IST. This is not a manual review or a confirmation from the employer.

Employer requisition: 532967

Job type and experience labels are automated discovery categories. The employer determines eligibility. Original experience wording was not retained separately; check the current employer page.

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Collected role description

• Perform end-to-end validation of 4G LTE and 5G NR modem features in SA/NSA deployments. • Execute functional, regression, interoperability, performance, and carrier acceptance testing. • Analyze protocol logs and debug issues involving RRC, NAS, IMS, SIP, PDCP, RLC, MAC, and PHY layers. • Validate VoLTE, VoWiFi, VoNR, IMS, NTN, Carrier Aggregation, Mobility, Handover, Network Slicing, and emergency services features. • Conduct protocol conformance and carrier certification testing as per 3GPP and operator requirements. • Work with test platforms such as Anritsu MT8000A/MD8430/ME7834, Spirent, Keysight UXM/PXT, and R&S CMW/CMX. • Perform root cause analysis using QXDM, QCAT, Wireshark, PA3, and other protocol analysis tools. • Collaborate with chipset vendors, development teams, and carrier/operator labs to resolve issues. • Develop and maintain test automation using Python, Robot Framework, PyTest, Shell scripting, or similar frameworks.