Professional Hardware Prototyping Specialist with over 10 years of experience in RF engineering, IoT solutions, PCB design, and microcontroller firmware programming. I have rich experience in developing many kinds of electronic consumer devices such as embedded systems, IoT devices, bio-medical devices, wearable devices, power supply devices, and automotive control systems. PCB DESIGN + PCB design EDA: Altium Designer, KiCAD, Eagle, Allegro + High speed signal analysis: DDR3, eMMC, length matching, differential pair, ESD, EMI/EMC compatibility + 1~16 layers PCB routing and layout design + Rapid Prototyping from several PCB factories like JLCPCB and PCBWIN at high quality + Component selection and BOM optimization for massive production + Assembly, testing, and troubleshooting FIRMWARE PROGRAMMING + IDE: Keil, Segger, IAR, esp-idf, TI Code vision, STM32 CubeMX, Arduino IDE + Microcontrollers: ATmega328, STM32, MSP430, dsPIC, PIC12/18/32 + FPGA: Lattice, Xilinx Spartan, Artix-7, Vertex + Raspberry Pi, ESP32, STM32, Arduino Questions and Answers to Upwork Readiness Test Solution 5/5 + Web Cloud: Amazon web service (AWS), Google Home, Alexa, MS Azure + Language: Python, C/C++, Qt Mechanical Design + Solidworks + AutoCAD