Hai Ah is a computational physicist at Los Alamos National Laboratory in the Computational Physics and Method Group. She has a background in low-energy nuclear physics and high-performance computing. Hai Ah is team lead for the Trinity Center of Excellence, helping to prepare critical tri-lab ASC codes for Trinity, a large-scale system with Haswell and Knights Landing nodes, and future architectures. She is a co-PI of the Nuclear Structure and Nuclear Reactions DOE INCITE project, the NUCLEI DOE SciDAC project, and worked for over six years at the Oak Ridge Leadership Computing Facility at Oak Ridge National Laboratory prior to joining LANL. She earned her B.A. in physics from Scripps College, M.S. in physics from Carnegie Mellon and her Ph.D. in Computational Science from Claremont Graduate University and San Diego State University.