Joseph Sirosh, PhD
Dr. Sirosh has served as a member of our board of directors since January 2022. Dr. Sirosh currently serves as the Chief Technology Officer of Compass, Inc. (NYSE: COMP) since December 2018. Dr. Sirosh previously held various positions at the Microsoft Corporation from July 2013 to December 2018, including Chief Technology Officer of Artificial Intelligence. During his tenure at Microsoft, Dr. Sirosh led product and engineering teams with responsibility for the enterprise database, Big Data and machine learning products. Prior to Microsoft, Dr. Sirosh served as a Vice President of Technology at Amazon.Com, Inc., from December 2004 to July 2013, where he built the machine learning and Transaction Risk Management teams. Dr. Sirosh holds a B.Tech in Computer Science and Engineering from the Indian Institute of Technology, Madras, and an M.S. in Computer Science and a Ph.D. in Neural Networks from the University of Texas at Austin.