Gkatzelis' research interests include algorithmic mechanism design, multiagent resource allocation and approximation algorithms. Prior to joining Drexel's faculty in 2016, Gkatzelis served as a postdoctoral scholar at the University of California, Berkeley's Department of Electrical Engineering and Computer Sciences; at UC Berkeley's International Computer Science Institute and Simons Institute; and at Stanford University. His professional experience includes working for Microsoft Research in Mountain View, CA; HP Labs in Palo Alto, CA; and Google in New York, NY.