• 09/2020-Present, Professor, School of Mathematics and Computing (Computational Science and Engineering), Yonsei University
   

• 09/2023-Present, Professor, Department 

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• 03/2021-02/2023, Department Head, School of Mathematics and Computing (Computational Science and Engineering), Yonsei University

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• 09/2019-08/2020, Professor, Department of Computational Science and Engineering, Yonsei University

 

• 09/2019–02/2020, Visiting Professor, Department of Mechanical and Aerospace Engineering, North Carolina State University, NC, USA

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• 09/2013-08/2019, Associate Professor, Department of Computational Science and Engineering, Yonsei University

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• 09/2010-08/2013, Assistant Professor, Department of Computational Science and Engineering, Yonsei University

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• 02/2010–08/2010, Guest Researcher, IAQ/BFRL, National Institute of Standards and Technology, MD, USA

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• 01/2005–08/2010, Research Associate / Research Assistant Professor, Department of Mechanical and Aerospace Engineering, North Carolina State University, NC, USA

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• 02/2007–05/2007, Contract Scientist, Human Study Division, US Environmental Protection Agency, NC, USA

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• 01/2003–12/2004, Post Doctor, Center for Environmental Medicine, Asthma and Lung Biology, University of North Carolina at Chapel Hill (UNC-CH), NC, USA

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• ​03/2002–12/2002, Post Doctor, Yonsei Center for Clean Technology, Yonsei University, Korea