Xander worked on modularizing Android initialization in the shadps4-emu/ext-SDL repository by introducing an SDLActivityComponent, which decoupled SDL startup logic from the Android Activity lifecycle. This refactor, implemented in Java with a focus on code organization and maintainability, enabled safer integration paths and simplified future testing. In the libsdl-org/SDL repository, Xander extended the SDL_SensorType enumeration in C by adding SDL_SENSOR_COUNT, allowing applications to generically iterate and manage all sensor types. Both features demonstrated careful API design and change isolation, reflecting a thoughtful approach to low-level programming and refactoring within complex, cross-platform codebases.