Thierry co-founded Snowflake and currently serves as Chief Technical Officer. Thierry is a leading expert in query optimization and parallel execution. He spent 13 years at Oracle focused on the optimization and parallelization layers in Oracle databases including as lead for the optimization group. Before Oracle, he spent seven years at the IBM European Center of Applied Mathematics working on data mining technologies. Thierry has a PhD in Computer Science with a focus in Database Systems and holds over 40 patents.