Long H.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I’m Long, a Control and Automation graduate from Hanoi University of Science and Technology, specializing in Embedded Systems and IoT development. I have hands-on experience with ESP32, STM32, and nRF52, with strong proficiency in C/C++, RTOS, system architecture design, multitasking and inter-process communication. My expertise includes state machine design, LVGL-based GUIs, OTA updates, Bluetooth/Wi-Fi connectivity, and UART/SPI/I2C peripherals. I leverage AI-powered tools to accelerate development, improve code quality, and enhance productivity. I’m a proactive problem-solver who can work independently and collaborate effectively within multidisciplinary teams. Currently available for new projects and collaborations.