Montelongo is president and CEO of GRC Advisory Services LLC since 2016 and is the former CAO and SVP of public policy and corporate affairs for Sodexo Inc.. Previously, he was appointed by President George W. Bush as assistant secretary of the Air Force for financial management and comptroller, concluding his tenure at the Pentagon as acting secretary of the Air Force. He currently serves on the boards of Conduent Inc. and the Larry H. Miller Management Corporation.