Donnell is currently employed as a Deputy State’s Attorney for the Prince George’s County State’s Attorney’s Office. In this capacity, Donnell is responsible for approximately fifty Assistant State Attorneys who prosecute cases in Circuit Court, and he also plays an instrumental role in developing and implementing the office’s policies and procedures. Prior to this position, Donnell spent approximately five years as an Assistant U.S. Attorney for the District of Columbia, where he prosecuted cases in both federal and D.C. Superior Court, and he wrote appellate briefs and argued cases before the D.C. Circuit Court of Appeals and D.C. Court of Appeals. In addition, he spent five years as a Trial Attorney in the Criminal Division at the Department of Justice, where he investigated and prosecuted international drug trafficking, narco-terrorist, and money laundering offenses. Donnell began his legal career as a labor and employment attorney, in which he worked in both the public and private sectors. Donnell is a graduate of the University of Maryland at College Park, and the University of Virginia School of Law. He is a longtime resident of Prince George’s County and currently lives in Bowie.