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La A.

La A.

Embedded Linux & Firmware Engineer | STM32, ESP32, IoT, OpenWrt

I help companies build production-ready Embedded Linux, MCU firmware, and IoT products. I specialize in STM32, ESP32, OpenWrt, Zephyr, FreeRTOS, Linux device drivers, BLE/Wi-Fi, MQTT, low-power design, OTA, and system integration. With 9+ years of embedded systems experience, I work across firmware development, board bring-up, wireless connectivity, networking, and system-level design. My core expertise includes: • MCU & Firmware: STM32, ESP32, Silicon Labs EFR32, ARM Cortex-M, NXP, Renesas, Microchip, C/C++, Zephyr, Apache NuttX, FreeRTOS, interrupts, DMA, ADC, low-power design, secure boot, and OTA • Embedded Linux: OpenWrt, Buildroot, Yocto, board bring-up, Device Tree, Linux device drivers, user-space applications, and networking • IoT & Wireless: BLE, Wi-Fi, Sub-GHz RF, TCP/IP, MQTT, Modbus RTU/TCP, and multi-node communication • System Design & Debugging: hardware/software partitioning, interface and data-flow design, root-cause debugging, performance optimization, and power/reliability trade-offs • Edge AI: TensorFlow Lite, TinyML, NPU deployment and optimization, MLIR/LLVM, and Python tooling I have delivered industrial IoT dataloggers, STM32 sensor-fusion firmware, secure BLE devices, Embedded Linux/Wi-Fi streaming systems, and Edge AI NPU deployments. I support projects from low-level firmware and Linux bring-up through connectivity, debugging, integration, and production deployment.

🇻🇳Cau Giay, Vietnam$25/hr100% JSS5.00 (6)Since Feb 2018

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#308,803 / 412k
🇻🇳Country#2,472 / 3,463
Revenue, last 30 days
$0
Total earnings
$2.7k

Billed in all: $2.7k

World#308,803 / 412k
🇻🇳Country#2,472 / 3,463
Per project
$380

$0 in the last 6 months

Projects, last 6 months
1
100% fixed0% hourly
World#128,092 / 412k
🇻🇳Country#1,284 / 3,463
Projects in all
7
100% fixed0% hourly
World#236,188 / 412k
🇻🇳Country#2,041 / 3,463

Earnings, last 30 days

$2.7kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$2,600$2,650$2,700$2,750Oct 8Oct 23Nov 7

Skills