In 2005, Waller joined the writing staff of the drama series Commander in Chief which aired for one 18 episode season from 2005 to 2006.
She then served as a writer and co-producer on the ABC comedy–drama Eli Stone from 2008-2009 with two writing credits alongside Wendy Mericle.
Waller and the show's writing staff the Writers Guild of America (WGA) Award for Best Drama Series for their work on Mad Men in 2010 and 2011.
[3][4] She shared the Primetime Emmy Award for Outstanding Drama Series in 2011 with Mad Men's production team.
She has written for the stage, with her one act play Between Movements debuting in 2012 as part of an initiative called Unscreened in conjunction with the Elephant Stages-Lillian Theatre in Los Angeles, California.