Cal Henderson

Co-founder & CTO of Slack

Travels From Travels From:
San Francisco, CA, USA
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Cal Henderson Biography

Cal Henderson is the Co-founder and CTO of Slack and oversees the engineering organization at Slack. He is an experienced technology leader, having previously built and led the engineering team at Flickr, through its acquisition by Yahoo.

Slack was previously Tiny Speck, creators of the massively multiplayer online game Glitch. Prior to his work at Tiny Speck, Cal was Flickr's Director of Engineering at Yahoo!. He was an inaugural member of the groundbreaking photo-sharing site, working alongside Flickr co-founder Stewart Butterfield, the now CEO and Co-Founder of Slack.

As a popular speaker on engineering scalability, he authored the best-selling O’Reilly Media book Building Scalable Websites. He was a pioneer in the use of web APIs, and created the basis for OAuth and oEmbed, now used by YouTube, Twitter, and many others.

Cal has a BCS from the University of Central England, and was involved in London’s early online community through his work with the early digital community B3ta and his personal blog iamcal.com, which he has run for over 15 years. Cal now resides in San Francisco.

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Speaker profile last updated by AAE Talent Team on 06/17/2024.

Cal Henderson Videos

  • Cal Henderson, Co-founder and CTO of Slack | Startup Grind
    Cal Henderson is the co-founder and CTO of Slack. He led the technical development of Flickr from its founding, pioneered the use of APIs, and...
  • EC18 Keynote: Slack, Cal Henderson
    Cal Henderson, CTO & Co-Founder, Slack.
  • Web 2.0 Expo SF 2010: Stewart Butterfield and Cal Henderson, "A ...

Cal Henderson Books

  • Building Scalable Web Sites: Building, Scaling, and Optimizing the Next Generation of Web Applications
    Building Scalable Web Sites: Building, Scaling, and Optimizing the Next Generation of Web Applications

FAQs on booking Cal Henderson

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  • What topics does Cal Henderson speak about?

    Cal Henderson is a keynote speaker and industry expert whose speaking topics include Business, Communication, Computer Science, Entrepreneurship, Futurism, Human Resources, Internet, Technology.
  • Where does Cal Henderson travel from?

    Cal Henderson generally travels from San Francisco, CA, USA, but can be booked for private corporate events, personal appearances, keynote speeches, or other performances. For more details, please contact an AAE Booking agent.
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Cal Henderson is a keynote speaker and industry expert who speaks on a wide range of topics . The estimated speaking fee range to book Cal Henderson for your event is available upon request. Cal Henderson generally travels from San Francisco, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Greg Brockman, Tom Preston-Werner, Jason J. Sosa, Jon Steinberg and Josh Linkner. Contact All American Speakers for ratings, reviews, videos and information on scheduling Cal Henderson for an upcoming live or virtual event.

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