During their two-month tenure, Rhow focused on enhancing build reliability and stability within the facebook/buck2-prelude repository. They addressed critical issues in the build system by reinstating duplicate module name validation, using Python and Starlark to prevent conflicts between Swift and Clang modules during parallel builds. Rhow also improved the Remote Execution pipeline by conditionally applying the -disable-sandbox flag based on environment variables, resolving nested sandbox action failures. Their work in DevOps and build systems reduced build flakiness, improved CI stability, and minimized developer triage time, demonstrating a deep understanding of complex build environments and targeted problem-solving.