Worked on two core repositories, focusing on backend improvements and documentation accuracy. In TraceMachina/nativelink, implemented zero-byte digest handling in the CompressionStore using Rust, ensuring that zero-byte data bypasses the inner store to reduce unnecessary I/O and adding comprehensive unit tests for various digest scenarios. For NixOS/nix, enhanced the documentation build process with shell scripting and Meson by conditionally excluding the 'Upcoming release' link based on the official_release variable, ensuring documentation accurately reflects release status. Demonstrated attention to asynchronous programming and robust testing, delivering targeted solutions that improved both system performance and the reliability of release documentation.