David Chaiken is the CTO of Altiscale, which operates Big Data analytics systems for its customers. He comes to Altiscale from Yahoo, where he served as the company's Chief Architect. At Yahoo, he led teams building consumer advertising and media systems with Apache Hadoop at their core. Over his career, David has also built voice-search products for consumers, mobile applications for enterprises, network management systems, project management software, large-scale multiprocessor architectures, a tablet computer, and several information appliances. David earned a ScB in Chemistry and Mathematics from Brown University and a PhD in Electrical Engineering and Computer Science from MIT.