Joshua Kleinfeld teaches and writes in three areas: legal and political philosophy; legislation and statutory interpretation; and criminal law and procedure. He has also practiced law in Northwestern's Juvenile Criminal Defense Clinic. He is a full professor with tenure at the Northwestern Pritzker School of the Law and (by courtesy) in Northwestern’s philosophy department. In 2017-18, he was a visiting professor at Harvard and Stanford Law Schools. He is the recipient of the Bator Award, given annually to one American law professor under the age of 40 who has demonstrated "excellence in legal scholarship, a commitment to teaching, a concern for students, and who has made a significant public impact."

Professor Kleinfeld clerked for Judge J. Harvie Wilkinson on the United States Court of Appeals for the Fourth Circuit; Judge Janice Rogers Brown on the United States Court of Appeals for the D.C. Circuit; and President (chief justice) Aharon Barak of the Supreme Court of Israel. He worked as an Associate at Debevoise & Plimpton LLP in Frankfurt, Germany, in the area of corporate criminal law. Before law school, he worked as a Senior Research Analyst at the White House’s Council on Bioethics.

For Professor Kleinfeld's full bio, visit his page on Northwestern's Pritzker School of Law.