City solicitor Wilmington, 1963—1968. Deputy attorney general Delaware, 1961—1968. Senior partner Biondi and Babiarz, PA and predecessor Biondi and Babiarz, 1967—1972.
President, 1972—1979. Senior partner Morris, Nichols, Arsht & Tunnell, Wilmington, 1979—2001, of counsel, since 2001. Member Long Range Court Planning Committee Delaware Supreme Court, 1972.
Vice chairman Delaware Agency to Reduce Crime. Titular chairman, 1973—1974. Chairman Crime Reduction Task Force, 1973—1974.
Chairman board director Delaware governor Investigative Strike Force, 1973—1974. Chairman Delaware Franchise Tax Committee, 1974, Del Supreme Court Board on Professional Responsibility, 1980. Chairman Advisory Committee on Alternate Dispute Resolutions Delaware Supreme Court, 1982.
Delaware counsel Delaware River and Bay Authority, since 1973. Board director Delaware Bar Foundation. Director First National Bank Wilmington.
Member delegate Democratic State Committee, since 1964.
Member of American Bar Association, Association Trial Lawyers American, Delaware Trial Lawyers Association, Delaware Member Bel. Bar Association (chairman committee general legislation, president elect), Wesley College (trustee), Delaware region National Conference of Christians and Jews, Del Council Banking (member 1970), Greater Wilmington Development Council, Grand Opera House (board director), Jefferson of Democratic Party (co-chairman since 1982).