Worked on the qmk/RIOT repository, focusing on kernel and driver reliability in embedded systems using C. Addressed scheduler integrity by correcting thread removal logic in the core scheduler, replacing clist_lpop with clist_remove to ensure accurate runqueue management. Expanded continuous integration to include hardware test coverage for the nucleo-l031k6 board, reducing platform-specific regressions and improving validation. Enhanced the DOSE driver by enabling power-off functionality outside idle states and allowing standby pin configuration regardless of device state, preventing deadlocks and increasing robustness. Demonstrated depth in kernel development and driver maintenance, prioritizing correctness, hardware validation, and power management reliability throughout.