John F. Liddi earned his J.D. degree from Hastings College of the Law (part of the University of California at San Francisco) in 1984. He is a member of the California Bar Association. He was a special agent with the FBI and was promoted to the Office of the General Counsel at FBI Headquarters in 1989, where he worked in the Investigative Law Unit until 1994 when he was transferred as a field agent to the Baltimore Division. In 1999, Liddi was promoted to supervisory special agent, associate division counsel, Baltimore division.