Cal Henderson is the Co-Founder and CTO of Slack. He is a world-renowned expert, author, speaker and a pioneer in the use of APIs.
Launched in 2014, Slack is the fastest growing business application in history. Millions of people around the world use Slack to bring their teams together, make sense of their work, and drive their business forward.
Cal Henderson is the co-founder and CTO of Slack. He is a world-renowned expert, author, and speaker, having led the technical development of Flickr from its founding, and authored the best-selling O’Reilly book “Building Scalable Websites”. Cal is a pioneer in the use of APIs and created the basis for oAuth and oEmbed, now used by YouTube, Twitter, and many others. He has a Computer Science degree from the University of Central England, where he was named Alumni of the Year in 2015.