Stewart Butterfield

Stewart Butterfield is the CEO and co-founder of Slack. For more than 20 years, he has been an entrepreneur, designer and technology leader, usually all at once.

In 2013, Stewart and his team launched Slack, which has transformed business communication. Today, Slack is the leading channel-based messaging platform, used by millions to align their teams, unify their systems and drive their businesses forward.

In 2003, Stewart co-founded Flickr, one of the pioneers of image sharing and the social web. As CEO, he built Flickr into one of the largest web services in the world.