Paul Zhang developed a selective feature build optimization for the rerun-io/rerun repository, focusing on the Rust SDK. He implemented refined feature gating and dependency management, allowing users to enable only the necessary features and thereby reduce build times and artifact sizes. By removing heavy dependencies such as DataFusion when not required, Paul streamlined the build process and aligned the SDK with broader architectural goals. His work leveraged Rust and software architecture principles to maintain compatibility with existing features while improving efficiency. This targeted engineering effort addressed the need for leaner builds and more manageable dependency trees within the Rust ecosystem.