CalHenderson


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

read more close

speaker on engineering scalability, he authored the best-selling O’Reilly Media book “Building Scalable Websites”. He was a pioneer in the use of webAPIs, and created the basis for oAuth and oEmbed, now used by YouTube, Twitter, and many others. Cal has a Bachelor of Computer Science 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 ran for over

, United States of America
Copy invite link
About
Cal
Henderson

LikeShareFollow

Follow Me
CalHenderson
https://www.abc-worldwide.com/site/CalHenderson/news/
US 7998-2798-5963-4256
Participant
Cal Henderson
Cal Henderson is the co-founder and CTO of Slack. He is an experienced technology leader, having previously built and led the engineering team at Flickr, through its acquisition by Yahoo. 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 webAPIs, and created the basis for oAuth and oEmbed, now used by YouTube, Twitter, and many others. Cal has a Bachelor of Computer Science 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 ran for over 15 years. Cal now resides in San Francisco.
Cal Henderson is the co-founder and CTO of Slack. He is an experienced technology leader, having previously built and led the engineering team at Flickr, through its acquisition by Yahoo. 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 webAPIs, and created the basis for oAuth and oEmbed, now used by YouTube, Twitter, and many others. Cal has a Bachelor of Computer Science 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 ran for over 15 years. Cal now resides in San Francisco.
 
US 7998-2798-5963-4256
CalHenderson
Participant 08/2025 valid 08/2026
Trusted Seller

Trusted Seller