He was a Field Clerk of the Crown since 1732, voivode of Podole Voivodship between 1736 and 1762 (with a gap between 1750 and 1756). In 1735 he received the prestigious Order of the White Eagle. A brave soldier, since 1752 he held the rank of Field Hetman of the Crown. A Castellan of several notable towns, he was an important politician at the Royal Court in Warsaw and was one of the main supporters of the liberum veto during the Diet of 1764, when he became known for his dispute with Szymon Konarski. During the Diet of 1767 (Repnin Sejm) he opposed Prince Nikolai Repnin's - Russia's ambassador to the Commonwealth - interfering in Poland's domestic affairs. In response, he was kidnapped along with his son Seweryn and two other prominent Polish politicians by Russian agents and imprisoned in Kaluga. Upon his release in April 1773 he was promoted for his merits to the rank of Grand Crown Hetman, but resigned the post in November of that year.