During November 2024, Kartik Soneji focused on stabilizing cross-platform build tooling for the anza-xyz/solana-sdk and anza-xyz/agave repositories. He addressed issues with home directory resolution in the build-sbf tool, implementing a Rust-based helper that reliably detects the correct environment variable on both Windows and Unix-like systems. By standardizing this logic across repositories, Kartik reduced Windows build failures and improved the reliability of developer onboarding. His work demonstrated strong skills in cross-platform development, environment variable management, and system programming, delivering maintainable solutions that enhanced the consistency of build pipelines and ensured platform tools were accessible regardless of operating system.