Hire the Best Arduino Experts
in China

I am an Electrical/Electronic Engineer having master's degree in electrical/Electronic Engineering with 14 years of experience in the field of Power electronics, Embedded systems, analog and digital electronics, Wireless sensor network and Internet of Things. I have developed hardware and Embedded systems of IOT devices, Environment Monitoring devices, Power electronic converters (DC -DC, AC to DC and DC to AC), Inverters, VFD (variable frequency Drive) simulation and Testing. I have skills and experience in following areas ✔Circuit Designing (analog and Digital), from concept to prototype and prototype to production ✔Firmware development based on STM32, Arduino, Raspberry Pi, ESP32 and ESP8266 ✔Wireless communication based on Lora Modules, Zigbee modules, NRF Module, NRF51822 BLE module ✔ IoT / Embedded Electronics Engineering Projects ✔Mathematical Modeling, Components Selection, Schematic Designing and PCB designing based on Altium Designer. ✔sourcing of components, negotiation of components and manufacturing of customized product ✔Testing and Debugging of Electronic circuits. ✔Hardware Designing of data loggers with sensors intergeneration. ✔Assembly services of electronic circuits and products ✔Robotics and automation ✔Power electronic converter circuit (buck converter, boost converter, inverters) designing testing and debugging ✔ ESP32 based projects like water quality tester, AI based gesture recognition system ✔ESP32 CAM based face recognition system ✔ESP32 based AI camera ✔ Arduino based embedded system projects using sensors and actuators' ✔Deep knowledge and expertise DC and AC motor driver designing ✔ EMI and EMC testing ✔Experienced Schematic and PCB designing trainer ✔ Experience embedded systems and IOT trainer

- 13 years of experience in the industrial design field. - 100+ Launched products in the market. - Master's degree in industrial design - Certified SOLIDWORKS Professional mechanical designer (CSWP). - The USA work experience in South Florida. - 140+ IQ in problem-solving. I also have experience and knowledge in other related fields like graphic design, web design, UX/UI design, photography, and animation to support my creativity. I consider myself a great idea generator when offering solutions. I’m good at thinking outside the box and not being affected by those existing products.

Over 10 years work experiences on electronics/hardware design. Top 10% at the PCB Design and Electronic Design Test. Expert in high-speed PCB design and simulation.Expert in high-speed memory interface such as DDR3,DDR2.and so on. Good at embedded software program,which is also where my core competence lies in,I can always consider problems from the system design. My goal is offer professional work with fair price.

🏆 Top Rated Plus • Top 3% on Upwork • 13,000+ hours delivered 🏆 226+ projects with 5-star reviews • 1,000+ SKUs successfully moved to mass production 🏆 25+ years engineering pedigree - Airbus, Thales Group, Safran & secure mobile networks Why Clients Hire Me I’m a true engineering partner with a full team and own a facility in South China: ✅ In-house SMT prototyping line - boards assembled in hours, not weeks ✅ Own plastic injection molding workshop - CNC, EDM, small-to-mid presses (mold + tooling + production under one roof) ✅ R&D lab for signal, power, safety & environmental validation ✅ Reliability testing lab - ESD, vibration, temperature/humidity, salt spray, waterproof ✅ Local sourcing teams in Shenzhen (China), Chennai (India) and Ho Chi Minh City (Vietnam) - a ready-made China +1 option Every stage of your project is under our direct control - never outsourced to unknown factories. What I Deliver 1. R&D & Full-Cycle Product Development - End-to-end hardware development from concept to mass production - including industrial design, IP-rated enclosures, and DFM-ready CAD. - I help startups and established brands through professional engineering, prototyping, tooling, certification, and production. 2. Electronics & PCBA Design - Schematics, multilayer PCB layout, component selection, and manufacturing-optimized Gerber files. - Embedded systems on STM32, ESP32, nRF, and Raspberry Pi, with BLE/Bluetooth, RF, IoT, custom sensors, motion control, robotics, and automated machines. - Firmware in C, C++, and embedded software with user interfaces. 3. Plastic Injection Molding (In-House Workshop) - Complete in-house service in China: DFM, mold design, tooling fabrication, and production. - Faster lead times, tighter quality control, stronger IP protection, and quick validation with first shots and pre-production runs. What My Clients Get ✅ Rapid prototypes (typically 14-21 days) ✅ Complete support from initial concept through CAD/DFM, tooling, certification, packaging, and logistics ✅ Direct factory access across China, India & Vietnam - a built-in China +1 option, no middlemen Track Record ⭐ 50 Engineering Design Projects Completed from Scratch ⭐ 54 Projects Successfully Transitioned into Production ⭐ 750+ Clients Assisted with Product & Component Sourcing ⭐ 22,000+ Orders Processed ⭐ 30,000+ On-Site Audits and Inspections Conducted Tools & Tech Stack CAD: Siemens NX (UG), Creo/ProE, SolidWorks, AutoCAD, ANSYS EDA: Altium Designer, KiCad, EasyEDA, Eagle, Pads Platforms: STM32/8, ESP32, nRF52/54, Raspberry Pi, Arduino, STC8, Airoha156x/157x, JieLi709x Programming: C, C++, Python Languages: English (Fluent) | French (Native) | Chinese (Conversational) If your product needs expert engineering, reliable sourcing, and tooling all handled by one experienced team, message me and I’ll be glad to talk through your project.

I am an Automation system design engineer, Hardware designer, Firmware developer and have the extensive experiences even over 15 years. I'm especially interested in home automation or making intelligent new products or acquire and application new technologies. I work with the target of design to low cost, low power, high performance, the miniaturization of device by a compact layout. I design carefully to achieve the best performance in all projects, I find joy and pride in the successful results of projects. The areas I've experienced a lot are as follows. ● STM32F103RCT6TR, STM32F407VGT6, STM32F429ZIT6, STM32L476RGT6, STM32H743ZIT6, etc. ● ESP32-WROOM-32D, ESP32-WROVER-E, ESP8266, etc. ● nRF51822, nRF52810, nRF52832, nRF52833, nRF52840, nRF52843, etc. ● RAK811, RAK831, RAK3172, RAK4200, etc. ● SIM7000G, SIM7070G, SIM7600E, SIM7600G, etc. ● Arduino Mega2560, Arduino Mega328P, etc. ● SRAM, DDR, DDR2, DDR3, LPDDR3, DDR4, DDR5, LPDDR4, etc. ● MEMS Sensors (3-axis, 6-axis, 9-axis), ECG, PPG, HRM, SPO2, CO, CO2, Humidity and Temperature, Touch, Pressure, PIR, etc. ● PCIe, SATA, Ethernet, HDMI, VGA, LVDS, USB, UART, USART, CAN, SPI, I2C, I2S, RS232C, RS485/RS422, etc. ● BLE, IoT, AWS, GPS, GSM, Bluetooth, Wi-Fi, Z-Wave, Zigbee, LoRa, NFC, RFID, LTE, etc.

I am Jennis Mike, an Embedded Systems and Product Developer focused on building real-world hardware and software systems that can move from prototype to production. My work combines embedded firmware, PCB design, IoT systems, and mobile/web integration. I work primarily with STM32 and ESP32 microcontrollers using workflows such as ESP-IDF, FreeRTOS, UART/SPI/I2C communication, motor control, and wireless systems. I also design custom PCBs using EasyEDA and prepare boards for manufacturing with JLCPCB. My projects include robotics systems, balancing robots, connected devices, and mobile applications. On the software side, I develop Flutter mobile applications, backend-connected platforms, and React-based web applications using Supabase and modern development workflows. Skills and experience include: • STM32 and ESP32 Development (ESP-IDF) • FreeRTOS • Embedded C/C++ • PCB Design & Schematic Design • EasyEDA & JLCPCB Manufacturing Preparation • IoT Systems • Flutter Mobile App Development • React-based Web Applications & Supabase Integration I enjoy solving engineering problems and helping turn ideas into functional prototypes and products.