I build efficient, low-power, and highly reliable embedded systems — from bare-metal firmware to hardware integration. Passionate about microcontrollers, communication protocols, RTOS, and real-world smart solutions.

• Specialized in embedded development: RTOS, hardware drivers, serial communication, and power optimization
• Proficient in C, C++, Python, and exploring Rust for safety-critical systems
• Hands-on experience with STM32, ESP32, ARM Cortex-M, FreeRTOS, and Embedded Linux
• Active in IoT projects involving sensors, wireless connectivity (Wi-Fi, BLE, LoRa), and cloud integration
• I value clean code, automated testing, and clear documentation

• Email: dennisreyoonjiho@gmail.com
• GitHub: @tangsangsimida

I'm always open to collaborations, technical challenges, and great conversations about engineering!