Goldberg is the special assistant to the director at Argonne National Laboratory, USA, where he is actively engaged in several international projects on the economics of nuclear energy, as well as in a key study on the economics of small modular reactors and supporting studies for the US Department of Energy's international Framework for Nuclear Energy Cooperation. Previously, he worked at the US Office of Management and Budget (OMB) as its representative on nuclear security to the National Security Council. At OMB, he helped complete several major nonproliferation agreements, including an agreement where the United States would purchase highly enriched uranium from Russia to use as nuclear fuel in its power plants. Goldberg received the Executive Office of the President's highest award for efforts to complete several major international nuclear nonproliferation agreements. He also received a series of outstanding achievement awards at the US Nuclear Regulatory Commission in recognition of efforts to provide technical and economic advice to the Commission, including the licensing of the Seabrook Nuclear Station. He is senior advisor to the Academy’s Global Nuclear Future Initiative.