He was appointed Great Crown Podstoli in 1764, Ambassador to Berlin in 1765, Master of the Hunt of the Crown in 1766–1773, Artillery General of Lithuania in 1768–1773, Ambassador to Moscow in 1771, Crown Hetman in 1773 and was Great Crown Hetman of the Polish–Lithuanian Commonwealth between 1774 and 1794. In 1774 Stanisław August Poniatowski ceded to him, as mark of his confidence and esteem, the immense estate of Bila Tserkva in the Kiev Oblast. He opposed the reforms of the Great Sejm (1788–1792), and supported the Hetman Party instead.