– Department of Computer Science and Statistics, Korea Air Force Academy,: Lecturer (1993-1996)
– Department of Statistics, Carnegie Mellon University: Postdoctoral Research Associate (2003-2004)
– Institute of Statistics and Decision Sciences, Duke University: Visiting Assistant Professor (2004-2006)
– College of Public Health, University of Georgia: Assistant Professor of Biostatistics (2006-2012)
– Department of Statistics, Seoul National University: Associate Professor (2012-2017), Professor (2017-present)
– Department of Statistics, Seoul National University: Associate Chair (2013-2015)
– College of Natural Sciences, Seoul National University: Associate Dean of Planing (2016-2018)
– Offie of Siheung Campus, Seoul National University: Project Leader of Operative Planing (2019-2020), Director Strategy Planing (2020-2021)
– Future Innovation Institute, Seoul National University, Associate Director (2020-2021)
– Department of Statistics, Seoul National University: Chair (2020-2022)
– Program Director of Integrative Data Science, School of Transdisciplinary Innovations, Seoul National University (2024-present)