Jakub Smolaga enhanced the stability and reliability of USB communication and temporary file handling across the phoenix-rtos/libphoenix, phoenix-rtos-project, and phoenix-rtos-devices repositories. He addressed pointer arithmetic issues in mktemp to ensure correct random data usage for temporary files, and integrated STM32N6 USB driver support through submodule updates, improving hardware interoperability. In the USB subsystem, Jakub fixed DAINT register handling in the STM32N6 USB client, ensuring proper atomic operations and event management for endpoints. His work, primarily in C and focused on embedded systems and driver development, demonstrated careful attention to cross-repository alignment and runtime risk reduction.