Michael Rowan is a NERSC Exascale Science Application Program (NESAP) postdoctoral fellow at Berkeley Lab. His main research focus is performance and optimization of the Exascale Computing Project (ECP) particle-in-cell code WarpX, including, e.g., load balancing. Michael completed his PhD in physics at Harvard University, where he studied dissipation of magnetic energy in collisionless accretion flows, by mechanisms including magnetic reconnection and the Kelvin-Helmholtz instability. Michael maintains an active interest in computational plasma astrophysics, in addition to his more recent research focus on load balancing, GPU and accelerator computing, C++, parallel programming, and performance measurement.