Sainath Kanthala
Chicago,USA
Summary
Knowledgeable [Desired Position] with strong background in engineering principles and project management. Successfully led multiple initiatives to improve process efficiency and product quality. Demonstrated expertise in problem-solving and collaboration with cross-functional teams.
Experienced with applying engineering principles to real-world problems, leading to impactful solutions. Utilizes analytical skills and technical knowledge to enhance operational efficiency. Track record of effective team collaboration and project completion.
Overview
9
9
years of professional experience
1
1
Certification
Work History
Cellular Engineer
Google
03.2025 - Current
- Performed KPI Testing on private network MSO CBRS SA, LTE, WCDMA & GSM Phones.
- Conducted extensive device log analysis utilizing QXDM and ELT tools to identify, troubleshoot, and resolve complex issues
- Led mobile device certification testing, ensuring adherence to MNO scripts and GCF PTCRB requirements
- Analyzed failure logs meticulously, triaging issues to streamline the troubleshooting process and enhance device performance
- Execute comprehensive field testing for mobile devices, ensuring compliance with 3GPP standards for 3G, 4G, and 5G technologies
- Conduct comprehensive field testing for smartphones and smartwatches, ensuring compliance with 3GPP standards.
- Develop detailed test plans and execute test cases to validate new features and software updates.
- Utilized QXDM and ELT to conduct detailed log analysis, identifying root causes of issues and providing actionable insights
- Worked with RF build verification, system RF acceptance, optimization and continuous technical support.
- Analyzing the product and feature requirements, converting them into system test cases and execution to ensure product meets customer spec.
- 3GPP LTE ML1,,LL1,RRC,RLC,MAC,PDCP IP NAS, RRC, Layer Analysis and Troubleshooting.
- Hands-on experience with Accuver XCAL/XCAP, Android ADB, Wireshark Software Tools.
- Proficiency with Cellular (3G/LTE/5GNR,)RAN-VoNR/EPS-FB/GNSS(L1/L5)
- WiFi(11a/b/g/n/ac/ax) Bluetooth/UWB OTA testing methodology.
- Good understanding of antenna chamber & system, chamber structure, system routing, calibration, and troubleshooting.
- Developed positive working relationships with stakeholders to effectively coordinate work activities.
- Solid domain knowledge in antenna/RF systems, electromagnetic and wave propagation theory.
ESIM Validation Engineer
Cox Communications
03.2024 - 03.2025
- Validated eSIM / physical SIM interoperability on CBRS SA/LTE private networks across Android and Apple devices.
- Supported SIM lifecycle testing including provisioning, profile activation, network attach, detach, and re-registration scenarios.
- Conducted SIM-related failure analysis using QXDM, ELT, and Wireshark to debug attach issues, IMS registration failures, and data session instability.
- Worked with OEMs, chipset vendors, and internal product teams to resolve SIM compatibility issues impacting certification and field performance.
- Executed KPI testing and call processing validation with SIM-dependent services such as VoLTE, emergency calling, and mobility.
- Assisted product and engineering teams with new technology trials (CBRS SA, 5G features) involving SIM-based configuration changes.
- Documented SIM and device behavior findings and contributed to internal knowledge base and launch readiness reports.
Device Test Engineer
Comcast
12.2021 - 03.2024
- Supported eSIM (eUICC) and Dual SIM (DSDS) device validation on CBRS 4G/5G private network environments, ensuring seamless SIM profile behavior across iOS and Android devices.
- Validated SIM profile provisioning, activation, and network attach procedures, including IMS registration and data connectivity flows.
- Performed device log analysis (QXDM, Wireshark, ELT) to troubleshoot SIM-related issues such as attach failures, APN mismatches, and intermittent data drops.
- Worked closely with OEMs and chipset vendors during certification to ensure SIM/eSIM interoperability with Xfinity MVNO and CBRS networks.
- Executed E2E test plans covering SIM swap scenarios, DSDS behavior, VoLTE registration, and mobility performance.
- Assisted in root cause analysis (RCA) of SIM-related customer and lab issues, providing actionable recommendations for network and device configuration fixes.
- Participated in commercial readiness and go-to-market validation by verifying SIM behavior across multiple UE models prior to launch.
MODEM TEST ENGINEER
QUALCOMM
09.2019 - 12.2021
- Experience in Performing Audio Quality, Narrow Band, Wideband, Call Performance, Audio delay using Spirent Nomad Kit for VOLTE Capable Devices.
- Involved in log analysis and Debugging related to chipset/ network Issues.
- Validating call flows during, volte calls and running tests using device-specific AT commands for automation.
- Performed KPI Testing on LTE, WCDMA & GSM Phones.
- Analyzing the product and feature requirements, converting them into system test cases and execution to ensure product meets customer spec.
- Perform detailed analysis of 4G& 5G Wireless Protocol logs.
- Worked with wire line and wireless data protocol stacks including: RLP, PPP, IP, TCP, IPV6, modem testing.
- Performed Data Performance test using Spirent Datum Client and Datum Application Tool for HTTP DL, HTTP.
LTE TEST ENGINEER
STARTECH NETWORK
03.2017 - 08.2018
- Performed KPI Testing on LTE, WCDMA & GSM Phones.
- Updating the Calibration data, comparing with the Calibration Back up file using Winner.
- Understanding of LTE, UMTS/WCDMA, & CDMA, Air interfaces, EPS Network Architecture, multiple access techniques such as OFDMA and SC-FDMA, MIMO, QAM, E-UTRAN Downlink Channels etc.
- Collected UMTS/LTE logs using XCAL and QXDM.
- Debug VOLTE call setup failure, VOLTE call drop issues and IMS registration issues with respect to device configuration as well as network using tools like QXDM and Wireshark.
- Develop, modify, and maintain GPS and telemetry processing tools for the reduction and analysis of flight test to determine Best Estimate of Trajectory.
- Call Performance Testing using NOMAD/QXDM, Data Throughput testing using DATUM and Audio Quality using NOMAD and DATUM.
Education
Bachelor Of Technology - Computer Science
JNTU
HyderabadMasters In Computers - Information And Security Systems
University of Cumberlands
Kentucky01.2016
Skills
- Critical thinking
- Project management
- Project planning
- Data analysis
Accomplishments
- Supervised team of 40 staff members.
- Achieved DSDS deployment (eSIM Margin for data offloading ) by completing BSS integration with accuracy and efficiency.
Certification
https://mainsail.exceedlms.com/student/award/TDkxqDHbZVVVpqEzoAF6KEVQ
Timeline
Cellular Engineer
Google
03.2025 - Current
ESIM Validation Engineer
Cox Communications
03.2024 - 03.2025
Device Test Engineer
Comcast
12.2021 - 03.2024
MODEM TEST ENGINEER
QUALCOMM
09.2019 - 12.2021
LTE TEST ENGINEER
STARTECH NETWORK
03.2017 - 08.2018
Masters In Computers - Information And Security Systems
University of Cumberlands
Bachelor Of Technology - Computer Science
JNTU