Summary 11 years analog digital circuit design experience 11 years embedded firmware programming experience Solid background in RF and electromagnetic, Expert in EMI EMC HighlightsEmbedded System Program - Texas Instruments ARM, MSP430, C2000 MCU and C6000 DSP.Real Time Operating System - FreeRTOS, SafeRTOS, SYSBIOS, VxWorksProgram Language - Embedded C C , Assembly, MatLab, Labview and VHDLCommunication Protocol Driver - SPI, UART, I2C, CAN, McASP and EthernetMotor Control - FOC Sensored and Sensorless Control, PMSM and BLDC MotorsPCB Schematic and Layout - Pads, OrCad, Cadence, AltiumCircuit Simulation Tools - Allegro PCB SI, HSPICE and HyperLynxADC Characterization Debugging - INL DNL SNR ENOB Offset Gain Absolute ErrorEMI EMC ESD Compliance standard Characterization TroubleshootingPCB Package Numerical Modeling Tools - Ansoft HFSS, EZ-FDTD, Apache PakSi-E, and FLO EMCRF Instruments - Oscilloscope, Spectrum Analyzer, Network Analyzer, TDR, LCR MeterEnvironmental Chamber - Temperature Chamber, Thermal Steam, Semi-Anechoic Chamber Experience04 2014toPresentElectrical EngineerAmentum Jbphh,HI,Design, develop and verify data acquisition and sensor interface circuits, primarily for the high temperature environment in downhole Oil Gas wells, from concept development all the way through manufacturing release.Design Simulated (in Spice) a 600Watt precision current amplifier.Design a downhole LOGIQ to DITS (Digital Interface Telemetry System) Adapter Sub.Experience includes Propose the electronics block diagram and signal flow.Draw the wiring diagram.Design (in Pads) Simulate (in Spice) the isolated 200VDC to 120VAC current fed resonant inverter.Implement the communication and control firmware using C for MSP430 MCU.Develop a Seismic While Drilling tool.Experience includes Concept development such as the top level functional signal flow and block diagram.Design the Hardware (Power Supply, Clock Electronic and Processor ADC boards using Pads.Analyze the analog front end signal to noise ratio and dynamic range for Hydrophone and Geophone.Design the Pre-Amplifier circuit, select the ADC.Select the key components such as the FPGA, DSP, and MCU, perform the power analysis and VREG simulation, design the circuit in Pads.Implement a decimation digital filter (one stage in FPGA and the other two stages in TMS320C6745 DSP) to improve the S N ratio and dynamic range.Design the Test System for the Next Generation Sonic Tool.Experience includes Design the hardware (Schematic, Layout and BOM), draw the wiring diagram using Pads.Develop the firmware using C C for TMS320C6745 DSP and MSP430 MCU.Emulate McASP, SPI, UART and a customized LVDS communication using FPGA.Build a standard 3U, two 1.25U 19-inch rack mount test boxes using Front Panel Express.Phase 0 and 1 study of a 500KHz 2MHz induction resistivity tool.Experience includes block diagram, component selection and preliminary schematic placement in Pads.Phase 0 and 1 study of a Fluid identification tool (density, mud resistivity and capacitance), experience includes circuit design, analog circuit simulation (in Spice) and FPGA programming (SPI, ADC interface).Phase 0 and 1 study of a 75V BLDC sensorless motor control.06 2006to03 2014Application EngineerTiaa San Antonio,TX,In charge of Hercules MCU Motorware and PMIC driver library, build motor related reference design and demos, solve customer EMC EMI problems, deeply involved in on-chip ADC characterization and improvement, served as the device owner of TMS470M series and TMS570LS2x MCUs, and worked as a core member to complete the 1st safety certification (IEC61508 SIL3) of TMS570LS2x MCU.Hercules is a 32-bit ARM based microcontroller used in safety applications such as ABS, airbag, chassis control, and EPS.Hercules BLDC PMSM motor control.Experience includes Design the hardware (Schematic, Layout and BOM) using Cadence.Implement the floating point fixed point Motorware using C C for ARM CortexR4TM MCU.Implement the 2 phase interleaved PFC using C assembly for ARM CortexR4TM MCU.Hand-assemble critical fixed point math function in IQmath library.Develop the Power Management IC (TPS65381) drivers using C C with CCS IDE and RTOS.Characterize and analyze the 12bit on-chip ADC.Verify the ADC wrapper logic using FPGA and the 12bit ADC test chip.Build the system with Embedded C and Labview to characterize the MCU 12bit ADC INL DNL SNR ENOB, write guideline to achieve the best performance.Deal with the ADC performance in noisy environment (e.g.during radiated immunity test).Expert in EMI EMC ESD area.Experience includes In charge of IC level Electromagnetic Interface (EMI) design improvement.Build validate the IC level EMC simulation models in SPICE for Hercules MCU.Responsible for EMI EMC ESD related compliance testing.Design EMI test boards using Orcad, write Embedded C test software, and Matlab, labview GUI to acquire data.Design the high voltage motor drive for the SPS-IPC show using C2000 DSP and ARM MCU, experience include PCB design using Altium, Embedded C programming and RTOS.Develop an EPS (Electric power steering) reference design with C2000 DSP and ARM MCU, experience include PCB design, Embedded C programming, resolver sensored PMSM Motor drive, digit filter design, Matlab Simulink simulation and PID Control.Develop development kits (e.g.launchpad, USB stick), experience include PCB design and Embedded C programming.Technical Support for ARM7, CortexM3, CortexR4 series MCUs.In charge of production cycle of TMS470M(ARM CortexM3TM) and TMS570LS2x ARM CortexR4TM ICs.Experience includes Write requirements and the specification, Datasheet, TRM, Application Reports.Develop silicon validation test case peripheral driver (SPI, UART, I2C and CAN) in C C .Design and develop soft error rate (SER) system to test hard radiation effect on IC.Experience includes PCB design, Embedded C programming, Matlab to acquire and analyze data.08 2002to06 2006Research AssistantProvidence Health Services Mill Creek,WA,Develop integrate the impressed magnetic Electric current sources into EZ-FTDT software using visual C .Develop a procedure to calibrate simulate near-filed probe antenna, estimate high frequency current from the near-field measurements, and predict far-field from near-field measurement .Develop vehicle EMC expert system, General Motors Corporation.07 2000to07 2002Electrical EngineerAmentum Johnston,,ChinaDesign hardware (schematic and layout) of routers and switches with Freescale MPC .Develop network device drivers with Vxworks (Embedded C). EducationExpected in06 2006totoPh.D. Electrical EngineeringUniversity of Missouri-Rolla,MOGPA Electrical EngineeringExpected in07 2000totoM.S Electrical EngineeringTsinghua University-Beijing,GPA Electrical EngineeringExpected in07 1998totoB.S Electrical EngineeringTsinghua University-Beijing,GPA Electrical Engineering SkillsDigital Analog Circuit Design, SPICE simulation, HFSS, Firmware development C C , Labview, RTOS, EMI EMC ESD, FPGA VHDL  SEP  Software Engineer Contract-to-hire Brooksource is seeking a high-energy entry-level Software Engineer to join our Fortune 100 clients Identity and Access Management team. As the software engineer you will get to work on a line of great engineers and support an industry leading software platform in the Identity and Access Management space, Sailpoint. In this role you will learn how to program on the Sailpoint platform and develop a highly in-demand skillset with a cutting-edge tool. As the software engineer you will work on new feature enhancement and general maintenance and support of the code base. If starting your career in the software engineeringcyber-security space sounds like something youd be interested in doing, please keep reading! Minimum Qualifications Information Technology, Computer Science or related college degree required Experience with Java Programming Experience with APIs is a plus Experience working in Cloud environments is a plus Desire and motivation to work on cutting edge technology platform Sailpoint Must have excellent troubleshooting, communication, and organizational skills. Willing to take initiative without an abundance of direct supervision Responsibilities Communicate with team that status updates and reportsReach out to customers to complete ticketsrequestsGather requirements for projectsPromote, update and test code on SailPoint platformWork in a collaborative team setting effectivelyOutline testing processes for new codeUpdate and write documentation for bug fixes and new functionality Whats in it for you Get trained on an industry leader IAM SAS platform Set yourself up for career in a growing and in-demand tech Job security earnings potential Highly visible work for Fortune 100 company Opportunity for long term employment and career growth Awesome workspace right in the arena district (remotehybrid work schedule) Work with developers of all skill levels and learn from great team of Sailpoint engineers ABOUT EIGHT ELEVEN At Eight Eleven, our business is people. Relationships are at the center of what we do. A successful partnership is only as strong as the relationship built. Were your trusted partner for IT hiring, recruiting and staffing needs. For over 20 years, Eight Eleven has established and maintained relationships that are designed to meet your IT staffing needs. Whether its contract, contract-to-hire, or permanent placement work, we customize our search based upon your company s unique initiatives, culture and technologies. With our national team of recruiters placed at 30 major hubs around the nation, Eight Eleven finds the people best suited for your business. When you work with us, we work with you. Thats the Eight Eleven promise.Eight Eleven Group provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, national origin, age, sex, citizenship, disability, genetic information, gender, sexual orientation, gender identity, marital status, amnesty or status as a covered veteran in accordance with applicable federal, state, and local laws.

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