Cal Henderson
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Callum James Henderson-Begg, known as Cal Henderson, is a British computer programmer and author based in San Francisco.
Henderson in 2019
Stewart Butterfield
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Daniel Stewart Butterfield is a Canadian billionaire businessman, best known for co-founding the photo-sharing website Flickr and the team-messaging application Slack.
Cal Henderson
…applications. Cal was the co-founder and VP of engineering at Tiny Speck, the company whose internal tool transitioned into Slack. Henderson's connection to Stewart Butterfield and Slack began through a game developed by Butterfield's first company, Ludicorp, called Game Neverending. He ran a fan website dedicated to the game…
Butterfield in 2017