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Candidate's Name
PHONE NUMBER AVAILABLE EMAIL AVAILABLESUMMARY Over 11+ years of varied experience in Telecommunication working on 4G LTE, IMS, VoLTE, and NSA 5G NR sub-6GHz and the domain in the areas of R&D LTE-5GNR NW and Modem. Experience in system performance related to 4G LTE and 5G NR technologies and in-depth knowledge of 3GPP Standards. Good understanding of 5G/LTE Architecture (gNB, eNodeB, MME, S-GW, PDN-GW, HSS, SGSN, MSC, RNC) Network Elements and Interfaces, and Protocols. Familiarity with basic ADB commands to check device connectivity, signal strength, data connection state, device build, and system information. Utilized Kubernetes to deploy and manage containerized applications, optimize resource usage and scaling infrastructure efficiently. Developed and implemented cloud orchestration strategies, enhancing automation and streamlining cloud infrastructure management. Collaborated with cross-functional teams to troubleshoot complex cloud-related issues, ensuring quick resolution and minimal downtime. Performed detailed protocol debugging using tools like QXDM, QCAT, XCAL, and Wireshark, identifying and resolving critical issues.PROFESSIONAL EXPERIENCE
Accenture Inc Feb-23 Present)
Role: Sr. 5G Test Systems Engineer
Addressing Modem-related issues, e.g., Operation executed on Lab for LTE/IMS-VoLTE and 5G-NR mmwave, on Live Networks. Expert domain knowledge in 5G/4G for KPI testing and performance on USCC carrier testing. Performed test cases and debugging of End-to-end 4G-LTE 5G-NR & VoLTE Calls, and SIP signaling. Through understanding of SIP messages between UE and IMS network. Responsible for setting up provisioned and debugging issues related to Qualcomm UE. Perform Client (Google Pixel) device Coverage Testing & Verifying network coverage across different geographical areas and under various conditions.
Working on troubleshooting Network errors and Monitoring testing via ADB commands. Multi-connectivity Testing and simultaneous connection to both 4G LTE and 5G NR networks for non-standalone deployments test On US Cellular carrier performed Roaming Testing and Validating the handovers of services when users roam between different LTE networks. Test 5G (FR2/FR1)/4G LTE Modem for validation on client devices.Samsung Technologies Inc (Feb-20 Jan-23)Role: Sr. 5G Systems Engineer Well-versed with 5GNR architecture, end-to-end call flow, and requirements as per 3GPP specification TS 38 series. Executed TCP/UDP throughput, Link curves, Carrier Aggregation (CA), CMAS, MFBI, e CSFB, NB-IoT, e MTC, and VoLTE. LTE/RAN Features Operations NB-IoT/CAT-M and Software Upgrades, E Node B Troubleshooting. Executed feature for LTE Carrier Aggregation to showcase improvements in cell throughput. Holds good protocol debugging skills using XCAl, QXDM, QCAT & and Wireshark. Experience working through system performance and product development life cycle of LTE/5G E NodeBand UE product development. Provide support through knowledge of SIP, RTP, IPv4, DNS, and TCP-IP. Testing Samsung devices on network simulators like Keysight UXM, Anite 9000, Agilent 8960, R&S CMW500, and Anritsu. Working on UE RF conformance test cases for 5G Sub6 & mmwave. Good understanding of 5G, Massive MIMO, mm-Wave & Beamforming.US Cellular IncRole: Sr. LTE System Device Engineer (Sept-19 Jan) Investigating reasons for VoLTE Call drops, IMS PDN & NW rejected issues IMS PDP, RTP timeout, SIP release, missing handover, new invite, etc.
Performing troubleshooting issues related to VoLTE MO/MT calls UE DL/UL peak Throughput and E-911 failures.
Debugging field issues related to e911/Throughput/VoLTE Calls Validation. Actively participates in Agile team and ceremonies.Samsung Technologies Inc (May 18 June-19)Role: LTE Systems Engineer Worked on LTE RAN Operations, Troubleshooting, Software Upgrades & MOP Validations.
Good understanding of EPC Architectures interfaces (S11/S1-MME/S1-U/S6a/S5-S8/X2). Worked on latest features Including NB-IoT/CAT-M/eMTC on Verizon Network.
Executed feature for LTE Carrier Aggregation to showcase improvements in cell throughput. Good Understanding of 5G NR-Non-Standalone (NSA) architecture, and NSA Call Flow concerning option 3X Good Understanding of Sub 6, millimetre wave, L2 architecture, L2 Protocol stacks, and beamforming. Understand customer requirements and develop 5G strategies concerning 5G-NR (NSA), Cloud, and Classical deployment. Worked on ADB commands for comprehensive 4G/5G device testing. Extensively performed A2, A3, and A5 event scenarios of Inter / Intra frequency handover validations. Validation of open CPRI Configuration involving Samsung BBU and RRH from other E Node B vendors. Experience using Samsung LSM/vLSM for E Node B end-to-end grow/ de-grow /configuration.
Motorola Mobility (a Lenovo Company)Role: Sr. Modem Systems Engineer (Oct-17-April-18)
Worked on Modem Verification System Team for verification & Regression testing of Modem Software to rule out Modem issues. Using Git & repo tools for synchronizing & building the Modem & NV update code.
Using Gerrit tools for making defect fixes and getting the reviews done.
Familiar with Jenkins, Artifacts, continuous builds, and continuous integration.
Intel Incorporation (Aug-16-October-17)Role: Sr. LTE Verification Modem Engineer - Santa Clara, CA Perform various RATs measurements on GSM/UMTS/LTE on RFV (RF Verification Tool) Through understanding of SIP messages between UE and IMS network. Hands-on experience with Protocol for UE Lab conformance using Protocol Analyzer s R&S CMW500, Spirent, Anritsu, and LAB equipment. Proficient in working with Protocol and Performance Test Simulators such as R&S CMW500 and Agilent 8960. Analyzing various call logs, call flows, Wireshark captures, and TCP dumps. Understanding of wireline and wireless data protocol stacks including IPv4v6 TCP, & UDP.Qualcomm Technologies Incorporated. (Sept-14 July-16)Role: Modem System Test Engineer
Execute LTE Modem Test Framework for Conformance & End to End (Functional) Operation Testing for UE Stack.
Well-versed in Performance for IMS-related protocols SIP, Diameter, and VoLTE protocols SIP, DNS, ENUM, and RTP. Responsible for the setup and debugging of issues related to Qualcomm UE, managing the patch panel that controls the internal wired RF signals coming from the E-UTRAN to the UE. Static and Mobility testing of LTE Triple Mode Test Cases including CSFB, VoLTE, and Carrier Aggregation test cases.Broadcom Technologies Incorporated. (Jan-13 Aug-2014)Role: LTE Test Engineer Experienced in collecting modem logs using N-trace and used Latte for modem analysis to find out the cause of the failures. Conducted IRAT testing on various carrier services (ATT &TMO) to check Handoffs from LTE to UMTS. Experience with supplementary service test Cases-Call Forwarding Call Waiting Call Hold. Worked on various devices to check the functionality and network connectivity using Throughput Testing, Regression Testing, and Stability Testing.Qualcomm Technologies Incorporated. (Nov-12 Sept-2013)Role: LTE Field Test Engineer
Logging, analyzing protocol stack messages, documenting, and filing data collected and bugs reports during data performance, radio performance, and device aggression test using QXDM, slick edit, and APEX. Assisting developers in collecting fail logs for newly identified issues and in issue reproduction scenarios Perform analysis and reporting issues like SIB/Radio/Reselection failures.Samsung Telecommunications America-TX (April 12 July 12)Blue TelecomRole: Field Test Engineer
Network interface testing and collecting logs using AP Logs, Dump Logs, RDX tools (Extractor Tool for Ram Dump), and TCP logs. Experience with Binary Flash for various UEs, Including Engineering & User binary full regression field tests. Experience with Upgrading UE software like Odin3 and Samsung PRL.
TECHNICAL SKILLS
Good understanding of 3GPP GSM, LTE TDD\FDD, UMTS,5G - Network Architecture, LTE Handover Procedures, LTE, and 5G RF Parameters. Android Device Diagnostics (ADB commands) Kubernetes Automation Tools Protocol Debugging (QXDM, QCAT, XCAL, Wireshark) Cloud-native technologies and DevOps practices Excellent interpersonal, communicative, intuitive, and analysis skills.
Technologies: LTE/VoLTE/5GNR MMwave/SUB6 Cloud Orchestration & Infrastructure Management Product Life Cycle Methodologies: Agile, SDLC, Scrum (Sprint Cycles)
EDUCATION Master s in engineering from International Technological University (ITU), San Jose, CA Bachelor s in electrical engineering.
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