Judge O’Sullivan was appointed to the Armed Services Board of Contract Appeals (ASBCA) as an Administrative Judge on June 29, 2014.  In that capacity, she presides over hearings, writes decisions, and serves as a neutral in alternative dispute resolution (ADR) proceedings involving a wide range of Department of Defense weapon systems, construction, and services contract disputes.

Prior to her appointment to the ASBCA, Judge O’Sullivan served in various capacities within the Department of the Air Force:  Deputy General Counsel (Acquisition), December 2011 to June 2014; Deputy General Counsel (Dispute Resolution), April 2010 to December 2011; Assistant Deputy General Counsel (Contractor Responsibility), July 2009 to April 2010, Assistant Deputy General Counsel (Dispute Resolution), October 2004 to July 2009.

Previously, Judge O’Sullivan engaged in the private practice of law in Washington, D.C., focusing on government contract litigation and counseling, including as a partner with the firms of Miller & Chevalier, Fried Frank, and Perkins Coie.  She is an active member of the ABA Section of Public Contract Law, including service as Vice Chair of the Alternative Dispute Resolution Committee, Co-chair of the Accounting, Cost & Pricing Committee, Budget and Finance Officer, and Council Member. She has authored articles and spoken on numerous government contract and alternative dispute resolution topics.

Judge O’Sullivan received her B.A. degree from The American University, Washington, D.C., and her J.D. from Georgetown University Law School. She is admitted to the District of Columbia Bar.