Streiffer began his career at
North Carolina State University as a research assistant professor. In 1998, he moved to
Argonne National Laboratory as a researcher in the Materials Science Division. He was awarded the status of Fellow by the
American Physical Society in 2007, for "experimental studies of ferroelectric thin film physics, that have established the relationships between epitaxial strain, ferroelectric phase transition behavior and domain structure, and size effects, and for advancing the fundamental understanding of complex oxide thin film microstructure." After serving in various roles at Argonne, he became the associate laboratory director for photon sciences and director of the
Advanced Photon Source in 2015. On July 1, 2020, he was named the Argonne National Laboratory deputy director for science and technology. From 2020 to 2022, he was also the co-director of the National Virtual Biotechnology, the
United States Department of Energy's effort to combat
COVID-19. In June 2022, he became
Stanford University’s vice president for
SLAC National Accelerator Laboratory. During the search for a permanent director of SLAC National Accelerator Laboratory, he served as interim lab director beginning in February 2023. In July 2023, Streiffer was announced as director of
Oak Ridge National Laboratory beginning on October 16. == References ==