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zhen LI
@bulubulu_li
IoT Embedded Systems Engineer STM32 ESP32
China
Über mich
Embedded & IoT Expert | 10+ Years Experience | 50K+ Units Shipped
I help clients turn ideas into mass-produced IoT products.
Skills: Firmware (C/RTOS), Hardware (STM32/ESP32/PCB), Connectivity (WiFi/4G/BLE/MQTT).
Highlights:
- 0.7µA ultra-low power design
- 99.5% MQTT data success rate
- -40°C cold-chain logger development
- Secured 100,000-unit overseas order
Ready to start your project? Contact me!
Kompetenzen
zhen LI
offline •
Durchschnittliche Antwortzeit: 1 Stunde
Meine Dienstleistungen
Eingebettete Systeme & Internet der Dinge
I will develop stm32 firmware and peripheral drivers using hal
Eingebettete Systeme & Internet der Dinge
I will develop esp32 iot mqtt wifi firmware and applications
Portfolio
Arbeitserfahrung
Embedded Software Engineer Shenzhen Yidian Technology
Shenzhen MeiLian Technology Co., LTD • Vollzeit
Jun 2025 - Aug 2026 • 1 yr 2 mos
Designed and developed RTOS-based firmware for STM32 and ESP32 platforms. Implemented OTA updates and optimized system performance. Core expertise includes: - Firmware Development: Proficient in C and RTOS. - IoT Connectivity: WiFi, 4G, BLE, LoRa, NB-IoT, and MQTT protocols. - Hardware & Debugging: PCB design and hardware debugging. - Advanced Features: Low power design and OTA implementation. Achieved 0.7µA standby power consumption and 99.5% MQTT reliability. Developed cold-chain devices for -40°C environments. Enabled 50,000+ annual shipments and secured a 100,000-unit order.
