Nicole Nelson-Jean, formerly the associate administrator of the National Nuclear Security Administration’s (NNSA) Office of Infrastructure, is now the principal associate administrator of NNSA’s Office of Environment, Safety and Health, according to her LinkedIn profile.
A source told the Exchange Monitor Nelson-Jean will be deputy to Ahmad Al-Daouk, the associate administrator for the office.
Nelson-Jean’s LinkedIn update said as of March 2026, she is the “executive leader” in charge of NNSA”s nuclear packaging and transportation, environmental operations, sustainability and climate resiliency.
Prior to her role at the Office of Infrastructure, Nelson-Jean was associate principal deputy assistant secretary for field operations at the Department of Energy’s Office of Environmental Management, an adjacent DOE agency in charge of cleanup of nuclear waste at the nation’s Manhattan Project-era sites.
During her time with the cleanup division, Nelson-Jean had been a leading voice in support of recruiting a more diverse workforce to the old weapons complex, and implementation of the White House’s Justice40.