Alexis C. Lewis is the deputy division director in the Division of Civil, Mechanical, and Manufacturing Innovation in the U.S. National Science Foundation's Directorate for Engineering. She holds S.B., M.S.E., and Ph.D. degrees in materials science and engineering. In 2003, she joined the Naval Research Laboratory, first as a National Research Council postdoctoral associate and then as a member of the technical staff. In 2014, she joined the National Science Foundation as a program director with a focus on materials engineering, advanced manufacturing, and data, computation, and infrastructure. As the deputy division director since 2020, she leads a diverse group of mechanical, materials, civil, operations, biomechanical, and design engineers.

Lewis has been an active member of TMS for 20 years, serving most recently on the TMS Board of Directors as the director and chair for Membership and Student Development. She has also been a member of the TMS Diversity, Equity, and Inclusion Committee and the TMS Integrated Computational Materials Engineering Committee and is past chair of the TMS Advanced Characterization, Testing, and Simulation Committee. Lewis was the recipient of the Rossiter Raymond Award in 2012 and the TMS Structural Materials Division Young Leaders Professional Development Award in 2013.