Andrew contributed to the Virtual-Protocol/acp-python repository by enhancing the reliability of time-sensitive backend operations. He addressed clock skew issues in distributed systems by increasing the valid_after buffer from 15 to 60 seconds, reducing the risk of timeouts and misordering across nodes. This Python-based solution focused on improving protocol sequencing predictability, especially in edge-latency environments. Andrew’s work demonstrated careful risk management and a methodical approach to incremental updates, aligning with best practices for backend development. The change was thoroughly documented and reviewed, reflecting a solid understanding of distributed system challenges and the importance of robust timing logic in Python applications.