I'm Paul and I have 8 years of experience in PCB design, prototyping, and firmware development for IoT applications, robotics, and embedded systems... in addition to being a team leader for many startup projects. Quality and schedule are two criteria I always commit to with my clients so I look forward to hearing from you so we can discuss more the job as well as have the opportunity to cooperate with you for a long time. 1. WORK EXPERIENCE - Multi-layer PCB design experience with: • Microprocessor circuit: ARM Cortex-M3, Cortex-M4, Cortex-M7, AVR, PIC, ATSAM3x8E (Arduino Due), ATMega2560 (Arduino Mega), nRF52840, nRF5340, etc. • SoM, SoC: CM4, Rasp, iMX8, Jetson Nano/Xavier/Orin, RK3588 Rockchip, AM625,... • High-speed: USB 2.0, HDMI 2.0, DDR3/DDR4, PCIe, NAND Flash, Ethernet 10/100/1000base-T1, etc. • Power supply: DC-DC (isolated, Flyback, Boost, Buck, LDOs…). • Communication circuit with motor driver: BLDC, AC servo, DC servo…via I/O, ADC and CAN. • Analog signal processing circuit: ADC, DAC, Audio. • Protocol/communication: o QSPI, I2C, RS485, RS232, CAN, Modbus TCP/IP, RTU, etc. o Wireless, IoT: RF, Wifi, Bluetooth 4.0, GSM (3G, 4G/LTE), Lora... - Experience in building evaluation kits such as Arduino, ESP32, ESP8266, STM32... - Combine dimensional drawings on paper and actual PCBs to be performed into Gerber format with very high similarity. - BOM creation from favorite suppliers: Digikey/Mouser/JLCPCB, LCSC... - Experience in the field of robotics research and development: Automated Guided Vehicles (AGV), AMR, vending machines, 6-axis robots... 2. MAIN SKILLS: - Routing: Clock signals, Differential pair, Bus & single-ended traces with noise consideration… - Knowledge of proper layout techniques for EMC and EMI compliance. - Knowledge of DFA, DFM, and PCB manufacturing and assembly processes. - Good reading and understanding of datasheets, schematics. - Good knowledge of electronics component theory and application 3. FIRMWARE & OTHER SKILLS - Manage the design, fabrication, and procurement processes to acquire the PCBs in a timely and cost-efficient manner. - Initiative, team working, research, and problem-solving skills are pretty good. - Excellent electrical evaluation, testing, and PCB troubleshooting skills. - Firmware development using C, C++, and Python language, QT... - UX/UI desgin for STM32, Rasp Pi, Figma,... - IoT: MQTT, Thingsboard, AWS, Blynk... 4. TOOLS and SOFTWARE - Experience with Schematic Capture and Layout with Altium Designer version 18.x, 21.x, and KiCAD Ver6.x7.x, Eagle 9.6.2, EasyEDA, Altium365/CircuitMarker. - Understanding of simulation tools such as OrCAD Capture and PSpice. - Checking the Gerber with CAM350 version 12.1 - Basic use of support tools such as AutoCAD, Autodesk Inventor…