He is appointed as Director of Projects at UMT in 2018. Previously, he was a post-doctoral fellow in Graduate Institute of Color and Illumination Technology at the National Taiwan University of Science and Technology, Taipei, Taiwan. He also worked as a visiting scholar in Competence Center Envelopes and Solar Energy at the Lucerne University of Applied Sciences and Arts, Horw, Switzerland. He has provided high-level research in a variety of institutes and across multiple research areas. From 2014, he is serving as the founding Editor-in-Chief of Journal of Daylighting. He has been invited as Guest Editor and reviewer of several international journals.