Job descriptionSkilled in C / C++ for STM32 bare-metal and FreeRTOS development using CubeMX, HAL, and LL drivers .Strong in UART / DMA communication, interrupt handling, and serial data parsing with ring buffers.Experienced with Sequans LTE-M / NB-IoT modems, AT command control, and PSM / eDRX power tuning .Proficient in debugging and power optimization using ST-LINK , SWO, and logic analyzers