Rajeev Thakur is a senior computer scientist and deputy director of the Data Science and Learning Division at Argonne National Laboratory. He received a Ph.D. in computer engineering from Syracuse University. His research interests are in high-performance computing, parallel programming models, runtime systems, communication libraries, scalable parallel I/O, and data science and machine learning. He is an IEEE Fellow. Rajeev was the director of Software Technology for the Exascale Computing Project (ECP) 2016-2017 and continues as the lead for the Programming Models and Runtimes area in ECP Software Technology.