Li Deng joined Citadel, one of the most successful investment firms in the world, as its chief AI officer in May 2017. Prior to Citadel, he was chief scientist of AI and partner research manager at Microsoft. Prior to Microsoft, he was a tenured full professor at the University of Waterloo in Ontario, Canada, as well as teaching/research at MIT (Cambridge), ATR (Kyoto, Japan) and HKUST (Hong Kong). He is a Fellow of the IEEE, a Fellow of the Acoustical Society of America, and a Fellow of the ISCA. He has also been an affiliate professor at University of Washington since 2000. Deng was an elected member of the Board of Governors of the IEEE Signal Processing Society and was editor-in-chief of IEEE Signal Processing Magazine and of IEEE/ACM Transactions on Audio, Speech, and Language Processing (2008-2014), for which he received the IEEE SPS Meritorious Service Award. In recognition of the pioneering work on disrupting speech recognition industry using large-scale deep learning, he received the 2015 IEEE SPS Technical Achievement Award for “Outstanding Contributions to Automatic Speech Recognition and Deep Learning.” He also received numerous best paper and patent awards for the contributions to artificial intelligence, machine learning, information retrieval, multimedia signal processing, speech processing, and human language technology. Deng is an author or co-author of six technical books on deep learning, speech processing, discriminative machine learning and natural language processing.