I contributed to building a distributed, scalable, and reliable financial data platform containing data of millions of securities, including real-time prices and historical prices. It handles request rates comparable to those of Google's search engine. I was a member of the platform architecture team, developed the communication library to distribute price data streams among the back-end components, built several features of the core DBMS, like price subscriptions, and optimized run-time performance. On normal trading days, the DB handled 300,000 price updates per second.