He has written and edits several web standards specifications including Fullscreen API, XMLHttpRequest, and URL.

Formerly worked on standards issues[2][3] as a software engineer at Opera Software,[4][5][6] he started working at Mozilla on 2013-02-04.

[7] He was Mozilla’s representative on the WHATWG Steering Group.

[8] He was an elected participant in the W3C Technical Architecture Group (TAG) from 2013 to 2014.

[9] Van Kesteren is the author and editor of several web standards: Anne van Kesteren has contributed to open source works including: This biographical article about someone involved with the Internet is a stub.