Liberi, a career member of the Senior Foreign Service, class of Career Minister, most recently served as the Senior Assistance Coordinator at the U.S. Embassy in Tripoli.
From 2009 to 2011, she served as Coordinator for the Interagency Provincial Affairs Office at the U.S. Embassy in Kabul and as Senior Civilian Representative for the Combined Joint Task-Force 82 with the International Security Assistance Force Regional Command-East at Bagram Airfield, Afghanistan.