Before joining the firm, he clerked for Judge Stanley Marcus of the U.S. Court of Appeals for the Eleventh Circuit, Judge Rudolph Contreras of the U.S. District Court for the District of Columbia, and Judge John D. Bates of the U.S. District Court for the District of Columbia, in his capacity as Chair of the Judicial Conference Standing Committee on the Rules of Practice and Procedure. Mr. Crenny graduated cum laude from Harvard Law School, where he served as an Executive Editor on the Harvard Law Review.

He is a member of the District of Columbia and Michigan bars.