Worked on the dbos-inc/dbos-transact-ts repository to optimize workflow rate-limiting by introducing a targeted database index that accelerates queries involving queue, status, and start time. Leveraging SQL and TypeScript, applied database optimization and system design skills to reduce query latency from hundreds of milliseconds to single digits. This change unblocked workflow queues and improved overall throughput and responsiveness for common workflows. The implementation included validating performance gains with targeted metrics and ensuring backward compatibility for existing processes. Demonstrated a focused approach to SQL indexing and performance tuning in a live production environment, delivering measurable improvements to workflow processing efficiency.