Gottemoeller first joined the Department of Energy in November 1997 as director of the Office of Nonproliferation and National Security. She rose to become the Deputy Under Secretary of Energy for Defense Nuclear Nonproliferation at the U.S. Department of Energy. She previously held the post of Assistant Secretary for Nonproliferation and National Security, also at the Department of Energy (DOE). At DOE, Gottemoeller was responsible for all nonproliferation cooperation with Russia and the Newly Independent States.[1]
Before returning to government, she was a senior associate in the Carnegie Russia & Eurasia Program in Washington, D.C., where she worked on U.S.–Russian relations and nuclear security and stability. While with Carnegie, Gottemoeller led consultative Track II meetings with Russian nuclear experts. She also served as the director of the Carnegie Moscow Center from January 2006 to December 2008.[1]
At the State Department (2009-2016)
Gottemoeller was confirmed as Under Secretary of State by the U.S. Senate on March 6, 2014. Prior to her confirmation, she had served as the Acting Under Secretary of State in the same capacity since February 7, 2012,[3] in addition to her role as the United States Department of State's Assistant Secretary for Arms Control, Verification, and Compliance, which she held since April 6, 2009.[4] She was the chief negotiator of the follow on for the Strategic Arms Reductions Treaty otherwise known as the New Strategic Arms Reduction Treaty (New START) with the Russian Federation (in Russia, the treaty is known as START III).[5][6][2] Her experience is described in a book, Negotiating the New START Treaty, published by Cambria Press in May 2021.
On August 6, 2015, Gottemoeller was the first senior U.S. official to attend the memorial of the atomic bombing of Hiroshima, Japan by the United States in World War II. It commemorated the 70th anniversary of the bombing and Gottemoeller was accompanied by U.S. ambassador Caroline Kennedy;[7] Kennedy was the second U.S. ambassador to attend the annual memorial. Japan's prime minister Shinzo Abe and representatives of 100 countries were in attendance. Abe reiterated Japan's policy which is in favor of the abolition of nuclear weapons. Japan had hoped for U.S. president Barack Obama to attend the memorial; the country has a standing call for the U.S. to apologize for the bombings.[8]
After leaving NATO, Gottemoeller joined Stanford University's Freeman Spogli Institute for International Studies and its Center for International Security and Cooperation as a distinguished lecturer.[10]