Juan Meza has been appointed as the new director of the Division of Mathematical Sciences (DMS) of the NSF, as of February 20, 2018. Meza works in scientific computing and numerical analysis. Before coming to the NSF, he was at University of California Merced where he was the Dean of Natural Sciences. Earlier, he was in the High Performance Computing Research group at Lawrence Berkeley National Laboratory and was at Sandia National Laboratories.
Meza did his PhD (find his thesis here) in the Computational and Applied Mathematics Department at Rice University with Bill Symes. (CAAM is in Duncan Hall, which is an exquisite building.) Symes did his PhD at Harvard with Phillip Griffith in algebraic geometry, though the vast majority of his publications are in PDEs and inverse problems.