Bob was almost exclusively a criminal appellate litigator in the early to mid 1990s, when he worked as an Assistant U.S. Attorney in the Appellate Division of the United States Attorney's Office for the Northern District of Georgia. There, he briefed and argued numerous appeals and edited briefs and mooted colleagues in countless others during his tenure.

The subject matter that he addressed in these cases ran the gamut of federal substantive and procedural criminal law, including including government corruption, bank robbery, bank, wire, and mail fraud, murder-for-hire, RICO, export controls, foreign corrupt practices, drugs, and money laundering.

While he worked at the United State Attorney's Office, Bob was as an instructor in the Appellate Advocacy Course at the Attorney General's Advocacy Institute of the Department of Justice.

After he left the Government in 1997, Bob continued doing criminal appellate work while at a large law firm, including handling primary briefing responsibilities in cases in the United States Court of Appeals for the Fourth and Eleventh Circuit. In addition, while in private practice, and subsequently even when he worked as an in house litigator, Bob wrote amicus briefs for the National Association of Criminal Defense Lawyers in two cases in which convictions were reversed, one in the United States Supreme Court and the other in the Fourth Circuit.

Since Bob returned to appellate practice full-time in 2000, he has briefed multiple trial court motions in a variety of cases, and he is currently involved in three pending criminal appeals in the Eleventh Circuit.