Dr. John G. Stevens is a Senior Nuclear Engineer and leads the Reactor Material Management Programs in the Nuclear Science and Engineering Division at Argonne National Laboratory. Dr. Stevens currently has the role of International Reactor Conversion Technical Lead and Strategic Lead of the Proliferation Resistance Optimization Program (PRO-X) for the U.S. National Nuclear Security Administration (NNSA) Material Management & Minimization team.

As a reactor physicist and project leader, Dr. Stevens has been a team member for reactor conversion metrics completed in the U.S., Europe, Jamaica, Asia, and Africa. His conversion and PRO-X scopes continue in the U.S., Europe, and Asia

Dr. Stevens is a Purdue Engineer, having completed his Ph.D. as a Department of Energy Fellow in 1995. He commercialized his nuclear optimization dissertation work to save fuel and millions of dollars for customers in Sweden, the U.S., and Taiwan. Prior to joining Argonne in 2005, he worked for the leading international nuclear power software firm Studsvik Scandpower, Inc. As a student, John worked for Westinghouse Nuclear Fuels Division and for the French Center for Nuclear Studies at Cadarache.