SUMMARY:

• Software Professional with problem solving experience. Excellent familiarity with Linux development environment and CPE/Router software. Experienced system level testing for Confidential, Confidential and Confidential router, set top box for real world deployment. Home user for ARRIS DOCSIS cable modem.

TECHNICAL SKILLS:

Operating Systems: RedHat, Ubuntu & Debian Linux.

Software: Embedded Linux, C/C++, TCP/IP, buildroot, busybox, bash, Linux Server configuration, 802.11 a/b/g/n/ac wireless software, VOIP, SIPP, SIP Server, Airopeek/OmniPeek, Ixia Chariot, Ixia VeriWave, Ixia IxLoad, Ixia Netweork, Wireshark/Ethereal, iperf/iperf3, MoCA WAN/LAN.

Hardware: EPI JENNI ARM emulator, RealView ICE, Lauterbach Trace32, FS2 JTAG.

PROFESSIONAL EXPERIENCE:

Confidential, Baltimore, MD

Senior QA and support Engineer

Responsibilities:

• Perform Confidential fiber optical router (BHR5) ONT/WiFi testing.
• Perform testing for BHR5 VOIP IOP and call features with Broadsoft and CS2K SIP server and PSTN lines.
• Perform BHR5 throughput test by using Ixia IxLoad and IxNetwork and make sure voice and IPTV quality are not impacted.
• Identify a QoS issue when tested with ARRIS OLT. Voice/IPTV packets did not set proper p - bits value and cause voice issue. Verified the fix after development team deliver software fix.
• Debug BHR5 VOIP issues with wireshark and system log.
• Run 48 hours voice reliability test for BHR5 by using Abacus to Nokia/ARRIS SIP/PSTN lines.
• Maintain lab setup for VOIP testing and perform 300+ voice test cases.
• Call features testing, include call waiting, call forwarding, distinctive Ringing, simultaneous ring, call transfer, 3-way call, 911, called party does not answer 480 packet, follow me, voice mail, star code, caller ID, Anonymous Call Rejection, Call Return *69, FAX, 56K modem data transfer, TTY device support, caller name, etc. Verify call flow and packets meet the requirement.
• Test alarm system by using OOMA plug.
• Identify a reminder ring drop 911 call issue before deliver software to Confidential .
• Using SIPP and asterisk SIP server to simulate VOIP network. Modify profile attributes to test VOIP features.

Confidential, Ashburn, VA

Senior QA and support Engineer

Responsibilities:

• Qualify Confidential Quantum Gateway (BHR4) 802.11 ac DFS certification at FCC lab.
• Use mirror switch to capture packets between router and set top boxes to make sure both Router and set top box software follow the requirement.
• Set up and maintain lab test environments and equipment to run test cases for Confidential Router (BHR4/5) and wireless set top box (uIPC/Mallard) for data/voice/TV services.
• Support Confidential Ashburn ME lab daily test activities.
• Use Ixia IxVeriView to run BHR4 TCP and UDP throughput test.
• Use Ixia IxNetwork to run BHR4 Ethernet/MoCA and Wireless interfaces QoS test cases.
• Use Jira defect tracking system to track Confidential router and set top box issues.
• Collect log in the field, lab and test house and work with remote engineering team to resolve router and set top box issues.
• Write scripts to stress test router and set top box.
• Understand the requirement and create test cases to make sure meet the requirements.
• Use Selenium with firebox browser to test Confidential wireless set top box.
• Maintain Confidential Fios setup in test house and run real world wireless test cases, include wireless set top box video quality, client’s rate and reach performance.
• Conducting CPU and memory performance analyses of different Confidential Routers and clients interoperability with popular clients (Apple iphone, ipad, Samsung phones, Printers, etc).
• Test Confidential MoCA WAN and MoCA LAN interoperability.
• Execute functional, regression and system test. Verify bug fixes.

Confidential, Fremont, CA

Senior Software Production Application Engineer

Responsibilities:

• Participated full product development of Confidential wireless set top box and video bridge for US deployment.
• Customize u-boot, wireless driver, scripts for Confidential set top box.
• Understand, duplicate and debug issues report by OEM/ODM/ Confidential .
• Travel to Confidential lab to resolve urgent blocking issue with very short notice.
• Assist customers to port our SDK and integrated into their platform.
• Implement script for Confidential wireless PHY/RF testing for hardware certification.
• Replicate and debug wireless problem report by telecommunications companies.
• Use Ixia Chariot to test wireless router wireless performance.
• Benchmark wireless router by running rate and reach test and performance test.
• Compile a compiler for BRCM/MIP 7408 SOC.
• Assist customers to pass WiFi and WPS certification.
• Use Bugzilla to track internal and external issues.
• Used shielded box and test tool to run conducted rate and reach performance tests.
• Used rotation table and test tool to run performance test for different orientation.
• Maintain a Confidential wireless set top box setup in test house to test real world scenario.
• Run performance test with different wifi AP in shielded room to make sure performance is better than competitors.

Confidential, NJ

Senior Staff Production Application Engineer

Responsibilities:

• Customize company board support package to bring up different customer hardware.
• Work with LSI engineer to bring up and verify new SOC.
• Run all interfaces traffic test on new SOC to make sure all interfaces function properly.
• Run unit test software to verify each block in SOC is function properly.
• Calculate different PLL value to provide different clock for hardware circuit on board.
• Reference SOC data book to fine tune SOC setting to balance performance and power consumption.
• Use Spirent SmarBits to test CPE throughput and make sure SOC no crash.
• Use Spirent TestCenter to test CPE performance.
• Customize Atheros old driver to work on new chipset to bring up customer CPE.
• Built and ran company Embedded Linux BSP on different customers’ hardware to debug software and hardware issues.
• Established and maintained technical relationships with customers to ensure products met our customer’s requirements.
• Provided technical support to solve customer hardware/software/firmware problems. Support included ISOS, Linux BSP, TCP/IP, ATM, Network protocol, VOIP, SIP, RAM, Flash, Ethernet switch, USB, 801.11 a/b/g/n wireless, DSL, PCIe, SATA I/II/III.
• Explore different RAM parameter setting to qualify majority of SDRAM/DDR
• Profile software to find performance bottleneck.
• Failure chip analysis to improve yield rate.
• Qualify SOC within temperature and voltage range.
• Used Defect Tracking system to manage and prioritize customers’ issues.
• Work around software patch for customer SDRAM random crash issue to continue million CPE shipping.
• Accomplished TR-069 IOP test with different ACS server vendors in the UNH IOP lab.
• Run the full Wi-Fi test cases to assist customers pass Wi-Fi Certification.