Karen Stevenson has been a Drupal contributor since 2006. She is a co-maintainer of the Content Construction Kit (CCK) and the author of the Date, and Calendar modules that use CCK and Views as the basis for highly flexible and configurable event management systems. She has also been heavily involved in the 'Fields in Core' initiative to move the CCK functionality to core for Drupal 7, and was responsible for updating the D7 version of CCK to be a user interface to the new core system.

Before becoming involved in Drupal, Karen created custom content management systems for her ElderWeb site and for other organizations. Her systems included web-based calendar and class scheduling systems and a multi-lingual help desk web site.

Karen has been actively involved in web development since the early days of the web. She created ElderWeb in 1994 as one of the very first health care sites on the web.

More info about Karen and her projects is available on her personal website. You'll see her on Drupal.org and in IRC as KarenS.