Lead Engineer

5 days ago

Bellevue, United States LTTS Full time

Job Description & Skill Requirement:

  • Professional Summary:
    • Electronic and Telecommunications Engineer with comprehensive expertise in 3G, 4G, and 5G technologies.
    • Experience in analyzing, planning, and optimizing RF networks firmly focused on validating mobile communications services and device interoperability.
    • Skilled at troubleshooting complex network issues and ensuring service quality under high-pressure conditions.
    • Exceptional communicator, adept at collaborating with cross-functional teams and stakeholders to ensure consistent and reliable service delivery.
    Professional Experience:
    Jan 2021 - Present T-Mobile (Contractor) Systems Design Test Engineer
    • Collection and analysis live network and device logs for 5G SA(Slicing, Voice over NR, and Voice over WiFi using NIWF3 technologies.), IMS (Audio, Video, RCS, VoWiFi), Emergency Services(Emergency 911 location discovery, Pidf-lo 3D location and Extended Emergency Number list), RAN Ericsson and Nokia new features.
    • Successfully certified a suite fall projects, ensuring interoperability and performance standards across various devices and OEMs with chipset like Qualcomm, MTK, Samsung etc.
    • General Engineering and Team Collaboration: Led extensive testing and E2E troubleshooting of complex services to reduce project timelines and enhance service efficiency.
    • Utilized various tools for chipsets: Qualcomm (QXDM, QCAT), XCAL, ShannonDM, ELT; for Network E2E analysis: Wireshark, Netscout (NSA ,Truecall,, IRIS); for RAN: OSS Nokia(Netact), Ericsson(ENM); and devices logs for service validation, contributing significantly to pre-launch testing and troubleshooting.
    • Reliably addressed significant complaints and collaborated with teams (Jira, etc.), contributing to consistent service delivery.
    May 2019 - May 2020 Sprint (Contractor) RF Engineer III
    • Focused on planning and optimizing CDMA/LTE/VoLTE network performance for service delivery in Washington State.
    • Validated IMS E2E call flows, analyzing service performance and ensuring high-quality service delivery across multiple technologies and troubleshooting voice issues like muting gap.
    • Utilized various tools for collection, postprocessing and analysis like Nokia OSS (Netact), NetScout (TrueCall- IRIS-NSA), Accuver (XCAL -XCAP), Qualcomm (QXDM, QCAT), Windcatcher, Atoll, MapInfo, Google Earth, PRTS and devices logs.
    • Led third-party drive test groups specifically for E911 service testing, ensuring compliance and service effectiveness.
    • Prepared timely regulatory forms like FCC/FAA and FAS submissions. November 2017 - April 2019 TechMahindra Network and Devices Engineer
    • Specialized in new service testing for UMTS/LTE/VoLTE, focusing on device compatibility and service reliability.
    • Managed device and network issue resolution, ensuring all new services met rigorous validation criteria before launch.
    • Utilized various tools for collection, postprocessing and analysis like Accuver (XCAL -XCAP), Qualcomm tools (QXDM, QCAT) and devices logs. August 2015 - August 2017 CNT government wireless network operator RF Engineer
    • Specialized in planning and Optimization for UMTS, LTE for ALU/Nokia and Ericsson network.
    • Conducted comprehensive service validation for new RF designs and network configurations to ensure robust service coverage and quality.
    • Ensured all new site developments and KPIs met service validation standards before going live, contributing to sustained network performance.
    • Utilized various tools for collection, postprocessing and analysis like Atoll, Mapinfo, NPO, WPS, SAM, WMS.
    • Prepared timely regulatory forms like FCC/FAA and FAS submissions.
    September 2013 - August 2015 Telefonica - Movistar wireless network operator RF and Site acquisition Engineer
    • Managed service validation processes while installing ZTE LTE networks, ensuring all sites met predefined service criteria.
    • Coordinated with engineering teams to test and verify site functionality and service performance during acquisition.
    • Proposed site candidates based on Atoll prediction, field survey evaluations and negotiation.
    • Utilized various tools for collection, postprocessing and analysis like Atoll, MapInfo. October 2012 - September 2013 Claro - Conecel wireless network operator RF and Tx Engineer
    • Performed RF network design, planning for coverage and capacity for Huawei nodes.
    • Lead multiple in-house projects to align with the Organization's goals and third-party group testers.
    • Evaluated new services within the commercial wireless services (i.e. WiMAX, Cellular, Wi-Fi, and Satellite) May 2011- October 2012 Konectado - Sestel RF Engineer
    • Performed RF network planning and optimization for coverage and capacity.
    • Performed rehoming, retuning, carrier activation.
    • Maintained and monitored KPIs during swap project Nokia to ZTE.
    • Analyzed log files of drive test data using and provided solutions to resolve failure events.
    • Utilized various tools like Netnumen, Atoll, Planet, Mapinfo, TEMS, Swissqual and IBWave July 2010- Mayo 2011 CNT government wireless network operator Systems Engineer • Installation and configuration wireless radios/ Access Points (AP), routers and switches • Configured Local Area Networks (LAN) for corporate clients and troubleshooting. Education:
    University ESPOL, Guayaquil, Ecuador
    Bachelor of Science in Electronics and Telecommunications Engineering
    May 2003 - August 2009

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