Worked on enhancing the Payload Builder in the flashbots/op-rbuilder repository, focusing on backend development and performance optimization using Rust. The main contribution involved removing unnecessary clones during payload construction, which reduced memory usage and improved the speed of block transaction processing. This optimization led to more efficient block assembly and faster execution times. The work included updating documentation and internal messaging to reflect the performance improvements, and was delivered collaboratively as evidenced by co-authored commit attribution. The project demonstrated a targeted approach to resource management and throughput enhancement, leveraging Rust’s strengths for backend systems and high-performance transaction workflows.