In June 2025, Alex Hochheiden enhanced the mozilla/gecko-dev and servo/stylo repositories by modernizing build systems and improving developer workflows. Alex delivered worktree support and hardened version control initialization, reducing manual setup and increasing reliability for both CI and local development. Using Python, Rust, and Shell scripting, Alex migrated tooling to Python 3.9, upgraded vendored dependencies, and refactored configuration management to streamline compatibility across environments. The work included updating Mako templating in Stylo, optimizing command line tools, and addressing fifteen bugs. Alex’s contributions demonstrated depth in code maintenance, dependency management, and system configuration, resulting in more robust development infrastructure.