Worked on the pytorch/executorch repository to optimize the build system for improved reproducibility and efficiency. Developed a feature that makes the re-download of Ethos-U dependencies optional during CMake configuration for executorch_runner, allowing offline builds when dependencies are already present. This approach reduced network usage, build times, and variability in continuous integration, supporting smoother onboarding and more reliable development workflows. Leveraged skills in CMake, build configuration, and shell scripting to implement conditional dependency management and integrate with ARM backend improvements. The work focused on enhancing developer productivity and resource utilization without introducing new bugs during the development period.