b
bulubulu_li

zhen LI

@bulubulu_li

IoT Embedded Systems Engineer STM32 ESP32

Cina
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Chi sono
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!... Continua a leggere

Competenze

b
bulubulu_li
zhen LI
offline • 
Tempo di risposta medio: 1 ora

Consulta i miei servizi

Sistemi integrati e IoT
I will develop stm32 firmware and peripheral drivers using hal
A partire da15 USD / progettoMaggiori dettagli
Sistemi integrati e IoT
I will develop esp32 iot mqtt wifi firmware and applications
A partire da25 USD / progettoMaggiori dettagli

Portfolio

Esperienza lavorativa

Shenzhen_MeiLian Technology Co., LTD

Embedded Software Engineer Shenzhen Yidian Technology

Shenzhen MeiLian Technology Co., LTD • Full time

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.