Mr. Jonas is a Partner at the Fluet law firm. His practice includes litigation, government contracts, administrative and regulatory compliance, employment law, appellate practice and investigations. He was nominated to be the General Counsel of the U.S. Department of Energy in May 2017. He was successfully voted out of Committee but withdrew his nomination after a lengthy wait for confirmation. He served as Senior Policy Advisor to the Secretary of Energy and on the Defense and Energy Transition Teams and the Energy Landing Team. He was also a Vice President at PenFed Credit Union.

He was a career member of the Senior Executive Service and served as General Counsel of the National Nuclear Security Administration (NNSA) and the Defense Nuclear Facilities Safety Board.

Prior to his civilian government service, he was a Marine Corps officer.  He served as nuclear nonproliferation planner for the Joint Chiefs of Staff and is one of the only judge advocates to have commanded two units, including a company in an infantry regiment, the 5th Marines. He argued the case of Davis v. United States, 512, U.S. 452 (1994) at the U.S. Supreme Court becoming the first judge advocate in the history of the Army, Navy, Marine Corps and Air Force to do so. He retired as a lieutenant colonel.

Mr. Jonas is an adjunct professor at George Washington University Law School and Georgetown Law.

Mr. Jonas serves on the Board of Directors of the Naval War College Foundation, the Young Marines National Foundation, and the Marine Executive Association, He also serves on the Advisory Committee of the University of Pennsylvania Law School’s Center for Ethics and the Rule of Law and he was appointed by the Secretary of Commerce to the Civil Nuclear Trade Advisory Committee. He also serves on the American Bar Association’s Rule of Law Initiative.

Mr. Jonas holds a B.A. from Denison University, a J.D. from Wake Forest University, an LL.M. from the U.S. Army Judge Advocate Generals School, an LL.M. from Georgetown University Law Center and an M.A. from the U.S. Naval War College.