Pyatt started his diplomatic career in
Honduras from 1990 until 1992 as vice-consul and economic officer in
Tegucigalpa. He was deputy chief of diplomatic mission in
India in 2006 and 2007. After that, he worked as deputy chief of U.S. mission to
International Atomic Energy Agency and other international organizations in
Vienna. Pyatt served as Principal Deputy Assistant Secretary of the
Bureau of South and Central Asian Affairs from May 2010 until July 2013. Pyatt took the
Oath of Office of
United States Ambassador to Ukraine on July 30, 2013 in the
Harry S Truman Building of the
United States Department of State in
Washington, D.C. Ukrainian President Viktor Yanukovych accepted Pyatt's credentials on August 15, 2013. and Geoffrey Pyatt greet Ukrainian President-elect
Petro Poroshenko before he met with U.S. Secretary of State
John Kerry in Warsaw, Poland, on June 4, 2014 During the
2014 Ukrainian revolution against Ukraine's President
Victor Yanukovych, Pyatt became part of
a diplomatic scandal in February 2014, when his conversation from the previous month with the Assistant Secretary of State for European and Eurasian Affairs at the United States Department of State,
Victoria Nuland, was apparently intercepted and uploaded to
YouTube. The conversation included Nuland saying, "Fuck the EU", which were harshly criticized by the
President of the European Council Herman van Rompuy and by
German Chancellor Angela Merkel. The call followed an offer made on January 25, 2014 by Ukrainian president Yanukovych to include two members of the opposition in his government to calm the Maidan protests in Ukraine, one being that of his Prime Minister. Nuland and Pyatt voiced their opinions of this offer, specifically on the post of Prime Minister, giving their opinion on the suitability and role of several opposition personalities. Of
Vitali Klitschko, Pyatt said, "Let him stay out and do his political homework and stuff I'm just thinking in terms of sort of the process moving ahead we want to keep the moderate democrats together". He also proposed "some kind of outreach to Yanukovych" and Nuland mentioned that then-Vice President Joe Biden would be helpful in that regard. He further said, "We want to try to get somebody with an international personality to come out here and help to midwife this thing" (a reference to Nuland's earlier suggestion of Robert Serry of the UN). This led to speculation in Russia and in the United States that the U.S. Government was interfering with Ukraine's sovereignty. After President Yanukovych's dismissal by the Ukrainian Parliament, Pyatt characterised pro-Russian separatist rebels in
Donetsk and
Luhansk as "terrorists". On September 25, 2015, during his speech at Odesa Financial Forum, Pyatt criticized Ukrainian Prosecutor's office. On May 19, 2016, he was nominated by U.S. President
Barack Obama to serve as
United States Ambassador to Greece. He was replaced by
Marie L. Yovanovitch in Ukraine. He was confirmed as the Ambassador to Greece on July 14, 2016. He was sworn in September 2016. He presented his credentials on October 24, 2016. He served in the post from October 24, 2016, until May 10, 2022. On April 22, 2022, President
Joe Biden nominated Pyatt to the position of
Assistant Secretary of State for Energy Resources. The Senate confirmed his nomination on September 15, 2022, and he was sworn in on September 19. ==Personal life==