Prior to joining UA in 2011, he spent one year for his Post Doctoral research in the W.M. Keck Center for 3D Innovation at the University of Texas at El Paso (UTEP) in 2007, sponsored by the Overseas Post Doctoral Fellowship from the Korea Research Foundations. After his involvement with the W.M. Keck Center, he was promoted twice first to the rank of Research Specialist in 2008, and then to Research Assistant Professor in 2009. Currently, he is serving as an editorial board member in several journals – Additive Manufacturing; Korean Society of Manufacturing Processing Engineers; and Korean Society of Mechanical Technology. He is a member of ASME, SME, and SPIE.