Previously, Roebuck served as Chargé d’Affaires at the US Embassy in Tripoli, Libya in 2013. He was Director of the Office of Maghreb Affairs at DOS from 2010 to 2012, and served as Deputy Political Counselor at the US Embassy in Baghdad, Iraq from 2009 to 2010. From 2007 to 2009, he was Deputy Office Director in the Office of Arabian Peninsula Affairs, and was Political Section Chief at the US Embassy in Damascus, Syria from 2004 to 2007.