Yoav Sapir teaches Criminal Procedure at Tel-Aviv University. He is currently Israel's Chief National Public Defender.
In 1997, upon completion of his clerkship term for Justice Mishael Cheshin of the Supreme Court of Israel, he joined the newly established Public Defender Office in Tel-Aviv, where he served as an Assistant District Public Defender and represented numerous defendants in all stages of the criminal process. He continued his studies at Harvard Law School where he was a Byse Fellow and taught a workshop on Critical Approaches to Criminal Law. He worked as an Associate at the law firm of Paul, Weiss, Rifkind Wharton & Garrison and was an intern at the Public Defender Office in Washington D.C. and at the human rights organization, Bureau des Avocats Internationaux in Port-au-Prince, Haiti. After returning to Israel he re-joined the Public Defender Office to serve as the Deputy Chief Public Defender and the Director of the Supreme Court Appellate Division. He was appointed to be Chief Public Defender in 2012.
In addition to Tel Aviv University, he has taught courses on criminal law and procedure at Bar Ilan University, Haifa University and the Interdisciplinary Center in Hertzeliya.