Stewart Butterfield (Slack) and Andrew Braccia (ACCEL Partners) at Startup Grind Global 2016

Stewart Butterfield is the co-founder and CEO of Slack. Stewart has built a distinguished career as a designer, entrepreneur, and technologist. A co-founder of Flickr, he has been named to Time Magazine’s 100 Most Influential People in the World, BusinessWeek's Top 50 Leaders and Vanity Fair’s New Establishment List. Andrew Braccia joined Accel in 2007 and focuses on consumer-oriented mobile and web services companies. He was the first investor and board member in Slack, lynda.com (acquired by LinkedIn), Squarespace, Vox Media, MyFitnessPal (acquired by Under Armour), 99designs and Cloudera. He also works closely with the teams at Braintree (acquired by PayPal), Etsy (public), Xero (public) and UserTesting. For more than a decade, Andrew ran Yahoo’s search and marketplace businesses. During his time he oversaw the acquisitions and integrations of Flickr, Del.icio.us, Inktomi and Overture. Andrew is from Santa Rosa, California and graduated from the University of Arizona, where he sits on the business school board.