Judge Gafni joined the faculty in 1994 as Professor of Law. Before coming to Villanova, Judge Gafni was in private law practice, an appellate court clerk, an attorney for the U.S. Securities and Exchange Commission, Deputy District Attorney for Law of Philadelphia, and a Judge of the Court of Common Pleas, where he served as Court Administrator of Pennsylvania for two years.

Judge Gafni has lectured on various legal topics for, among others, the United States Department of Justice, the American Law Institute, the American Judicature Society, the Federal Trade Commission, the National Institute of Trial Advocacy, the Pennsylvania Bar Institute, the Pennsylvania College of the Judiciary, the Pennsylvania District Attorneys Association, the Philadelphia and other county bar associations and the Annenberg Research Institute for Judaic and Near Eastern Studies.

He has taught courses on trial practice, professional ethics and administration of criminal justice at area law schools for over 25 years. He also has prepared many publications for the education of both the judiciary and the Bar, and written articles for Temple Law Quarterly and the Pennsylvania Law Quarterly.

Judge Gafni is active in numerous professional and civic organizations. He is a justice on the Supreme Court of the World Zionist Organization, Chair of the Resolutions Committee of the Jewish Agency Assembly and a member of the Executive Committee of the Jewish Federation of Greater Philadelphia. He is a member of the Steering Committee of the Pennsylvania Futures Commission on Justice in the 21st Century and the Medical Ethics Committee of the Philadelphia Geriatric Center. He is also the Training Director for the Alternative Dispute Resolution Committee of the Pennsylvania Bar Association.