John Riviello created his first hypertext document on the Internet in 1996 and has been obsessed with building for the web ever since. He spends his days as Distinguished Engineer and Lead Front-end Developer at Comcast, where he works on the Xfinity customer websites and web applications, including xFi.

John has spoken at numerous conferences, including JSConf, Polymer Summit, LibertyJS and The Lead Developer. He is also the author of the Lynda.com course "CSS to Sass: Converting an Existing Site." In his free time, he prefers surfing waves over surfing the Internet.