Secret Leaders

Welcome back to series 4 - what a season have we got lined up for you! Kicking us off is Cal Henderson, co-founder and CTO of one of this decade’s most famous tech companies - the team communications platform the majority of companies couldn’t be without, Slack. But Cal hasn’t always been CTO of Slack, he cut his teeth as co-founder and VP Eng for Glitch, a web-based massively multiplayer game, before that, he was the Director of Engineering for Flickr at Ludicorp (where he first met Slack fellow co-founder Stewart Butterfield) and then Yahoo. As you will shortly hear, Cal is considered to be one of Britain's finest exports. Although it's probably fair to say that he divides people much less than Marmite. Now residing in San Francisco where Slack is headquartered, Cal grew up in the humble county of Bedfordshire, England. After completing a computer science degree from Birmingham City University, he moved to the US in 2003, but not before landing a job after hacking into the email system of the company he wan