During April 2026, Kastopia developed macOS SDK support for the ExecuTorch Swift wrapper in the pytorch/executorch repository, enabling the library to be deployed on macOS platforms. This work involved updating the build configuration to incorporate macOS-specific dependencies and settings, ensuring seamless integration with existing cross-platform workflows. By leveraging Swift and expertise in cross-platform and macOS development, Kastopia addressed compatibility gaps and simplified adoption for macOS developers. The changes, merged under PR #18688, expanded the reach of ExecuTorch and improved platform flexibility. The engineering effort demonstrated depth in build-system configuration and dependency management, though it focused on a single feature.