Stevens served in the U.S. Navy Nuclear Program as a nuclear steam power plant mechanic aboard the USS George H.W. Bush, a Nimitz-class super-carrier stationed in Norfolk, VA. He was then transferred to the Modifications and Additions to a Reactor Facility (MARF) plant located at the Knolls Atomic Power Laboratory's Kesselring Site in Ballston Spa, NY, where he taught students how to operate a nuclear plant in a hands-on environment.
In 2013, Stevens transitioned to the private sector, becoming nuclear contracts administrator at Conval. In this role, he dealt with Conval nuclear valve design codes, specifications, contracts and general sales activity.