Prior to joining KNU, he worked as senior researcher at Korea Institute of Science and Technology Information (KISTI), Daejeon, Korea. He holds a PhD degree in Computer Science from University of Arizona, USA. His research interests include database design/systems/ergalics, big data, performance evaluation, and data-driven convergence. He is a recipient of Best Poster Award of IEEE/ACM CCGrid 2016. He also holds two Best Paper Awards from EDB 2016 and BigDas 2017.