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Jiang L.

Electrical Engineer | PCB Designer | ESP32 & IoT Developer

Shenzhen, China

Global rank:

1,006 / 131,399

Skill pts: 38

Finalist

API Arduino IDE CAD Design Embedded Systems Design PCB Design

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About

Hello! I am an experienced electrical engineer and PCB designer with over 10 years of expertise in developing innovative, reliable, and high-quality electronic solutions across diverse industries. Holding a bachelor’s degree in electrical engineering, I have a proven track record of designing, developing, and deploying advanced circuits, embedded systems, and IoT devices.

What I Bring to Your Project:
• PCB Design & Layout: Skilled in schematic capture and PCB layout using Altium Designer, Cadence, PADS Mentor Graphics, KiCad, EasyEDA, and RapidHarness. I have extensive experience designing multi-layer (up to 24 layers), high-density, HDI PCBs suitable for medium and high-volume production. I am familiar with manufacturing processes including JLCPCB for PCB fabrication and local support within China to facilitate manufacturing, prototype assembly, and quick revisions. I am committed to providing results on time and maintaining clear, prompt communication with clients.
• Microcontroller & Firmware Development: Proficient in programming STM32, ESP32, PIC, AVR, STM8, and STC microcontrollers using Keil, STM32CubeIDE, VSCODE, MPLAB X IDE, and more. I excel in developing firmware for IoT, automation, and embedded systems.
• IoT & Wireless Communication: Expertise integrating Bluetooth, BLE, LoRa, NB-IoT, RFID, WiFi (4G), MQTT, and other protocols into embedded systems.
• Sensor & Display Systems: Development of color screens, segment displays, touch panels, and interface solutions for user-friendly product experiences.
• Communication Protocols: Extensive experience with I2C, SPI, UART, CAN, RS232/485, Modelbus RTU, IR, RF (433/315 MHz, 2.4G, 4G, LoRa).
• Reverse Engineering & Troubleshooting: Capable of analyzing, debugging, and optimizing complex circuits.
• Power & Multimedia Systems: Power management circuits, LED lighting, audio devices, sensors, and multimedia integration.
• Support for China Local Manufacturing(PCBWAY, JLCPCB): In addition to design, I offer local support within China to facilitate manufacturing, prototype assembly, and quick revisions. This ensures smooth collaboration and shorter lead times

Why Work With Me:
I am passionate about delivering precise, innovative, and reliable designs tailored to your specific needs. I prioritize quality, efficiency, and clear communication to ensure your project’s success — from prototype to production. I am committed to providing results on time and responding promptly to any client inquiries, ensuring smooth and efficient collaboration.

Design Entries

Experience

Senior Hardware Engineer Huaxing Electronics Co., Ltd · Full-time Jul 2017 – Feb 2024 6 yrs 7 mos Shenzhen, Guangdong Province, China • Led the hardware design and development for a range of IoT products, including smart home devices and industrial sensors, tailored for the Chinese market.
• Managed the complete PCB design lifecycle using Altium Designer, from schematic capture and component selection to layout, routing, and Gerber generation, ensuring compliance with Chinese regulatory requirements (CCC, SRRC).
• Developed embedded firmware for ARM-based microcontrollers, focusing on low-power communication protocols such as NB-IoT, LoRaWAN, and Bluetooth Low Energy.
• Collaborated closely with cross-functional teams (software, mechanical, product management) to define product specifications, develop prototypes, and bring products to mass production.
• Optimized designs for cost-effectiveness by leveraging strong relationships with local component suppliers and PCB manufacturers in the Pearl River Delta region.
• Mentored junior engineers in PCB design best practices, embedded firmware development, and DFM (Design for Manufacturing) principles.
Electrical Engineer / PCB Designer Jianwei Technology Group · Full-time Aug 2012 – Jan 2017 4 yrs 5 mos Beijing, Beijing, China • Designed and tested analog and digital circuits for a variety of embedded systems, including LED lighting controllers, touch panel interfaces, and power management circuits.
• Created multi-layer PCB layouts using Cadence OrCAD, adhering to industry standards and DFM guidelines.
• Developed and implemented test procedures for verifying circuit functionality and performance.
• Collaborated with mechanical engineers to ensure proper integration of electronic components into product enclosures.
• Sourced electronic components and PCB fabrication services from local suppliers.
• Contributed to the development of technical documentation, including schematics, BOMs, and test reports, in both English and Chinese.

Education

Shanghai Jiao Tong University Bachelor of Engineering (BEng), Electrical engineering, Graduated 2007 – 2011