Alfred Spector is Chief Technology Officer and Head of Engineering at Two Sigma, a firm dedicated to using information to optimize diverse economic challenges. Prior to joining Two Sigma, Dr. Spector spent nearly eight years as Vice President of Research and Special Initiatives, at Google, where his teams delivered a range of successful technologies including machine learning, speech recognition, and translation. Prior to Google, Dr. Spector held various senior-level positions at IBM, including Vice President of Strategy and Technology (or CTO) for IBM Software and Vice President of Services and Software research across the company. He previously founded and served as CEO of Transarc Corporation, a pioneer in distributed transaction processing and wide-area file systems, and he was on the computer science faculty at Carnegie Mellon University. Dr. Spector received a bachelor’s degree in Applied Mathematics from Harvard University and a Ph.D. in computer science from Stanford University, where he was a Hertz Fellow. He is a Fellow of both the Association for Computing Machinery and the IEEE. He is an active member of the National Academy of Engineering and the American Academy of Arts and Sciences, where he serves on the Council. Dr. Spector won the 2001 IEEE Kanai Award for Distributed Computing and the 2016 ACM Software Systems Award, the latter for his work on the Andrew File System (AFS).