Worked on the renovate-bot/java-spanner repository to deliver a targeted performance optimization for SQL parsing within the Connection API. Addressed the inefficiency of traditional string splitting by integrating Guava’s lazy splitter, which accelerated parsing speeds by up to 1600 times for large SQL statements. Enhanced code maintainability by removing the unused supportsExplain() method, reducing the API’s surface area. Introduced a dedicated benchmark to quantify parsing performance and establish a baseline for future improvements. The work demonstrated a strong focus on Java-based API development, performance optimization, and benchmarking, resulting in cleaner code and measurable gains for SQL parsing workflows.