· Guest Researcher, Korea Institute of Science and Technology Information2020–2020
· Professor, Chung-Ang University2018–
· Associate Professor, Chung-Ang University2014–2018
· Visiting Fellow, University of Stuttgart2014–2014
· Adjunct Professor, Nguyen Tat Thanh University2013–2014
· Visiting Professor, University of Malaya2013–2014
· Associate Professor, Yeungnam University2013–2014
· JSPS Fellowship, National Institute of Informatics2012–2013
· Assistant Professor, Yeungnam University2009–2013
· Full-time Lecturer, Yeungnam University2007–2009
· Research Professor, Inha university2006–2007
· Postdoctoral Researcher, INRIA Rhone-Alpes2005–2006
· Ph.D, Inha University2002–2005
· Master’s Degree, Inha University1999–2002
· Bachelor’s Degree, Inha University1995–1999