Pierce is a career member of the Senior Foreign Service, class of Minister Counselor. Pierce entered on duty in the Foreign Service in 1978. He has served abroad as consular officer in Mexico City (Mexico), Santiago (Chile), and as Chief of the Consular Section in Calcutta (India), and Istanbul (Turkey.)
Pierce is a seasoned diplomat with a long history in the Foreign Service, having joined in 1978. Throughout his career, he has held various positions abroad, including stints as a consular officer in Mexico City, Santiago, and Calcutta, and as chief of the Consular Section in Istanbul.