Mr. Mazol currently is Performing the Duties Of (PTDO) the Under Secretary of Defense for Research and Engineering (OUSD(R&E)) and Chief Technology Officer. Previously, he served as the Republican Policy Director for the Senate Armed Services Committee with responsibility for science and technology policy and programs. A capitol hill veteran, Mazol also served as the Republican Policy Director for the Senate Commerce, Science, and Transportation Committee; National Security Advisor for Senator Roger F. Wicker (R-Miss.); and Legislative Director for former Congressman Jim Bridenstine (R-Okla.).

Mazol holds degrees from George Washington University and the University of Richmond.