Developed a Per-URL Proxy Metadata Selection feature for the apache/stormcrawler repository, enabling granular proxy routing decisions based on individual URL metadata. The work involved designing and implementing new utility classes and methods in Java to manage proxy metadata, with a focus on backend and API development. This approach provided per-URL control over proxy usage, aiming to reduce proxy-related failures and improve crawl throughput. The implementation incorporated unit testing to ensure reliability and maintainability, and review feedback was addressed through collaborative cross-team efforts. The feature was integrated following a thorough review process, reflecting attention to robust engineering practices and code quality.