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Cal Henderson

Co-founder & CTO of Slack

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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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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

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FAQs
  • HOW TO BOOK Cal Henderson?

    Our booking agents have successfully helped clients around the world secure talent like Cal Henderson for both live and virtual events for over 15 years. The team at All American Entertainment represents and listens to the needs of organizations and corporations seeking to hire keynote speakers, celebrities or entertainers for speaking engagements, personal appearances, product endorsements, or corporate entertainment. Fill out a booking request form for Cal Henderson, or call our office at 1.800.698.2536 to discuss your upcoming event. One of our experienced agents will be happy to help you get pricing information and check availability for Cal Henderson or any other celebrity of your choice.
  • HOW MUCH DOES IT COST TO BOOK Cal Henderson?

    Booking fees for Cal Henderson, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. Pricing often varies between live and virtual events. Other factors that can affect speaker fees include the talent's schedule, market conditions, length of presentation, and the location of the event. The live and virtual event speaking fees listed on this website are intended to serve as a guideline only. In some cases, the actual quote may be above or below the stated range. For the most current fee to hire Cal Henderson, please fill out the booking request form or call our office at 1.800.698.2536 to speak with an experienced booking agent.
  • WHO IS THE AGENT FOR Cal Henderson?

    All American Entertainment has successfully secured celebrity talent like Cal Henderson for clients worldwide for more than 15 years. As a full-service talent booking agency, we have access to virtually any speaker or celebrity in the world. Our agents are happy and able to submit an offer to the speaker or celebrity of your choice, letting you benefit from our reputation and long-standing relationships in the industry. Fill out the booking request form or call our office at 1.800.698.2536, and one of our agents will assist you to book Cal Henderson for your next private or corporate function.
  • WHAT IS A FULL-SERVICE TALENT BOOKING AGENCY?

    All American Speakers is a "buyers agent" and exclusively represents talent buyers, meeting planners and event professionals, who are looking to secure celebrities and speakers for personal appearances, speaking engagements, corporate entertainment, public relations campaigns, commercials, or endorsements. We do not exclusively represent Cal Henderson or claim ourselves as the exclusive booking agency, business manager, publicist, speakers bureau or management for Cal Henderson or any other speaker or celebrity on this website. For more information on how we work and what makes us unique, please read the AAE Advantage.
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This website is a resource for event professionals and strives to provide the most comprehensive catalog of thought leaders and industry experts to consider for speaking engagements. A listing or profile on this website does not imply an agency affiliation or endorsement by the talent.

All American Entertainment (AAE) exclusively represents the interests of talent buyers, and does not claim to be the agency or management for any speaker or artist on this site. AAE is a talent booking agency for paid events only. We do not handle requests for donation of time or media requests for interviews, and cannot provide celebrity contact information.

If you are the talent, and wish to request removal from this catalog or report an issue with your profile, please click here.

Cal Henderson

Co-founder & CTO of Slack

Travels From:
San Francisco, CA, USA
Speaking Fee:
Live Event: Please Contact  
Virtual Event: Please Contact

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.

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

FAQs on booking Cal Henderson

  • How to book Cal Henderson?

    Our booking agents have successfully helped clients around the world secure talent like Cal Henderson for both live and virtual events for over 15 years. The team at All American Entertainment represents and listens to the needs of organizations and corporations seeking to hire keynote speakers, celebrities or entertainers for speaking engagements, personal appearances, product endorsements, or corporate entertainment. Fill out a booking request form for Cal Henderson, or call our office at 1.800.698.2536 to discuss your upcoming event. One of our experienced agents will be happy to help you get pricing information and check availability for Cal Henderson or any other celebrity of your choice.
  • How much does it cost to book Cal Henderson?

    Booking fees for Cal Henderson, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. Pricing often varies between live and virtual events. Other factors that can affect speaker fees include the talent's schedule, market conditions, length of presentation, and the location of the event. The live and virtual event speaking fees listed on this website are intended to serve as a guideline only. In some cases, the actual quote may be above or below the stated range. For the most current fee to hire Cal Henderson, please fill out the booking request form or call our office at 1.800.698.2536 to speak with an experienced booking agent.
  • Who is the agent for Cal Henderson?

    All American Entertainment has successfully secured celebrity talent like Cal Henderson for clients worldwide for more than 15 years. As a full-service talent booking agency, we have access to virtually any speaker or celebrity in the world. Our agents are happy and able to submit an offer to the speaker or celebrity of your choice, letting you benefit from our reputation and long-standing relationships in the industry. Fill out the booking request form or call our office at 1.800.698.2536, and one of our agents will assist you to book Cal Henderson for your next private or corporate function.
  • What is a full-service talent booking agency?

    All American Speakers is a "buyers agent" and exclusively represents talent buyers, meeting planners and event professionals, who are looking to secure celebrities and speakers for personal appearances, speaking engagements, corporate entertainment, public relations campaigns, commercials, or endorsements. We do not exclusively represent Cal Henderson or claim ourselves as the exclusive booking agency, business manager, publicist, speakers bureau or management for Cal Henderson or any other speaker or celebrity on this website. For more information on how we work and what makes us unique, please read the AAE Advantage.

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 Stewart Butterfield, Nicole Yeary, Greg Brockman, Garry Tan and Kevin Allocca. Contact All American Speakers for ratings, reviews, videos and information on scheduling Cal Henderson for an upcoming live or virtual event.

Cal Henderson Speaker 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 created the basis for oAuth and oEmbed, now used by...
    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 News

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During normal business hours, we respond to most inquiries within 4 hours.

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Speakers Similar to Cal Henderson

This website is a resource for event professionals and strives to provide the most comprehensive catalog of thought leaders and industry experts to consider for speaking engagements. A listing or profile on this website does not imply an agency affiliation or endorsement by the talent.

All American Entertainment (AAE) exclusively represents the interests of talent buyers, and does not claim to be the agency or management for any speaker or artist on this site. AAE is a talent booking agency for paid events only. We do not handle requests for donation of time or media requests for interviews, and cannot provide celebrity contact information.

If you are the talent, and wish to request removal from this catalog or report an issue with your profile, please click here.

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