Stewart Butterfield

CEO & Co-Founder, Slack

Stewart Butterfield is the co-founder and CEO of Slack, an enterprise software platform that allows teams and businesses of all sizes to communicate effectively. Today Slack is used by more than five million people every day, and its customers include Autodesk, IBM, Capital One, Conde Nast, eBay and EA.

Prior to Slack, Stewart co-founded and lead Flickr—an image and video hosting website—from 2003 through its 2005 acquisition by Yahoo!. By 2008, it was heralded as one of the largest web services in the world, with more than 50 million users and billions of photos.

Stewart has led a distinguished career as a designer, entrepreneur, and technologist in his nearly two decades working on the web. Time Magazine named him one of the 100 Most Influential People in the World, and he has been ranked among BusinessWeek's Top 50 Leaders. He was also recognized as the 2015 Technology Innovator of the Year by the Wall Street Journal, and has been featured on Vanity Fair’s New Establishment List.

Stewart graduated from the University of Victoria with a degree in philosophy, continuing on to earn a Master of Philosophy from the University of Cambridge. His other academic interests include cognitive science, the history and philosophy of science, and economics.

Stewart currently resides in Vancouver, British Columbia.