Worked on enhancing build reproducibility for the flashbots/op-rbuilder repository by implementing deterministic Rust builds. Focused on configuring Cargo settings and updating the .cargo/config.toml file with targeted build flags and profile adjustments, this effort ensured that build artifacts remained consistent across different environments. The approach improved the reliability of CI/CD pipelines, minimized discrepancies caused by environment-specific factors, and streamlined the process of release verification. Leveraged expertise in Rust, TOML, and build configuration to deliver these improvements. No major bugs were addressed during this period, as the primary objective was to strengthen build stability and artifact integrity for ongoing development.