Thomas M. Hardiman was nominated by President George W. Bush to the U.S. Court of Appeals for the Third Circuit on January 9, 2007 and was confirmed by the Senate (95-0) on March 15, 2007. Prior to becoming a circuit judge, he served as a trial judge on the U.S. District Court for the Western District of Pennsylvania. Before taking the bench in 2003, Judge Hardiman was in private practice from 1990 to 2003.
In 2008, Chief Justice John Roberts appointed Judge Hardiman to the Information Technology Committee of the Judicial Conference of the United States. Judge Hardiman was appointed Chairman of the IT Committee in 2013, and he continues to serve in that capacity.