Jay Mullis, a longtime executive around the Department of Energy’s nuclear sites, has been appointed senior vice president for nuclear and waste management operations for United Cleanup Oak Ridge (UCOR).
Mullis announced his new title over the weekend on LinkedIn. UCOR, a joint venture of partners Amentum and Honeywell, is the environmental prime for the Oak Ridge Site.
For the past 13 months, Mullis has been UCOR’s chief nuclear officer.
Between 2016 and March 2025, Mullis held key senior leadership positions for DOE’s Office of Environmental Management. During those years, Mullis headed the Oak Ridge Site field office and, for a time, served as the acting head of regulatory and policy affairs (EM-4) for Environmental Management.