Worked on build system tooling and executable configuration, focusing on the facebook/dotslash and bazelbuild/bazel repositories. Developed a configurable argv[0] option for executables in Rust, allowing precise control over process invocation and improving compatibility for programs sensitive to the zeroth argument. Enhanced configuration and documentation to streamline onboarding and reduce setup complexity. In Bazel-related projects, addressed packaging and dependency management issues using Bazel and Python scripting, including embedding the JDK in the bazel-dev launcher and updating fetch workflows for Bazel Central Registry. These contributions improved build reliability, developer experience, and ensured robust dependency handling across diverse development environments.