| Professor | 2018 – present |
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| Department of Biomedical Engineering, Seoul National University College of Medicine, Republic of Korea |
| Associate Professor | 2013 – 2018 |
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| Department of Biomedical Engineering, Seoul National University College of Medicine, Republic of Korea |
| Assistant Professor | 2009 – 2013 |
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| Department of Biomedical Engineering, Seoul National University College of Medicine, Republic of Korea |
| Visiting Professor | 2015 – present |
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| Rice University |
| IRB Member | 2015 – present |
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| Seoul National University Hospital |
| Medical Device Policy Consultant | 2014 – present |
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| 충청북도 바이오육성과 |
| Academy Board Member | 2010 – 2017 |
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| The Korean Society for Biomaterials (KSBM), Republic of Korea |
| DDS Board Chair | 2013 – 2013 |
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| The Korean Society for Biomaterials (KSBM), Republic of Korea |
| Academy Board Chair | 2012 – present |
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| The Korean Society of Medical and Biological Engineering (KOSOMBE), Republic of Korea |
| Academy Board Member | 2011 – 2012 |
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| The Korean Society of Medical and Biological Engineering (KOSOMBE), Republic of Korea |
| IT Manager | 2010 – present |
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| Seoul National University Hospital Biomedical Research Institute, Republic of Korea |
| Postdoctoral fellow | 2006 – 2009 |
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| School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, USA |
| Postdoctoral fellow | 2006 |
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| Intelligent Nanohybrid Materials Laboratory, Ewha Womans University, Republic of Korea |