Mathi is a postdoctoral appointee in the Leadership Computing Facilities Division at Argonne National Laboratory, his work is related to ECP applications and software technologies, working to port scientific software to run on next generation hardware, as well as potentially to enhance the performance and capabilities of the software through algorithmic improvements, code parallelization, performance analysis, and use of novel architectural features. Specifically, focusing on the development of a code suite for multi-physics simulations of stellar explosions, ExaStar-Thornado. His research also focuses on data communication strategies between host and devices over the different heterogeneous HPC systems using different programming models.