 He worked at Russian diplomatic missions in Sweden, France and Great Britain.In 1809-1811 he was Imperial Russia's Ambassador to the United States, in 1811-1815 he was the Ambassador to Brazil and in 1815-1822 he was the Ambassador to Bavaria.Later, he became the General-Governor of Novorossiya and the "namestnik" (deputy) of Bessarabia (following the departure of Mikhail Semyonovich Vorontsov to the Caucasus).