Private practice, Danville, Virginia, 1798
Private practice, Kentucky, 1799-1800
Private practice, Baltimore, Maryland, 1800-
State delegate, Maryland, 1809
Secretary, Committee of Public Safety, Baltimore, Maryland, 1812-
Associate judge, Maryland Court of Appeals, Sixth Judicial District, 1812-1817
Member, diplomatic mission to South America, appointed by President Monroe, 1817
Chancellor, State of Maryland, 1824-1846