2010-present: Professor, Hannam University
1999-2010. Senior Researcher, Div. of Forest Biodiversity, Korea National Arboretum, Pocheon, Prov. Gyeonggi, Korea
2002-2003: Visiting Scientist, Dept. of Entomology, Northeast Forestry University, Harbin, China (KOSEF Fellowship)
1997-1999. Researcher, Div. of Forest Entomology, Korea Forestry Research Institute, Seoul, Korea
1995-1996. Post-Doc, Div. of Forest Entomology, Korea Forestry Research Institute, Seoul, Korea
1994-1995. Instructor, Dept. of Agrobiology, Kangweon Nat. Univ., Chuncheon, Korea
1993-1994. Assistant, Natural Science Museum of Kangweon National University, Chuncheon, Korea
Zooraxa, editor (2020-present)
Journal of Asia-Pacific Biodiversity, editor in chief (2013-present)
Biodiversity Data Journal, subject editor (2019-present)
Journal of Forestry Research: Associate Editor (2011-present)
Entomological Society of Korea, Member and Director (1989-present).
Korean Society of Applied Entomology: Member, Editorial board, vice president (1989-present)
Korean Society of Systematic Zoology: Member & Director (1994-present).
Insecta Koreana: Member & Editor (1990-2003)
Japanese Society of Heterocerists: Member (1995-present).
Societas Europea Lepidopterologica: Member (1991-present).
The Award of Minister of Science and ICT, 2020 (과기정통부장관상)
The Award of Excellent Professor in Research, Hannam University, 2019 (한남대 우수연구교원상)
The Award of Bioblitz 2018, Director of Korea Forest Service, 2018 (바이오블리츠공로표창)
The Award for Excellent Researcher, Prime Minister of Korea, 2007 (모범공무원 국무총리상)
Included in Who’s who in Science and Engineering (Marquis Who’s Who), 10th Anniversary Ed., etc. 2007-2020
The Award for Prominent Researcher, Ministry of Agriculture & Forestry, 2005 (농림부장관표창)
The Award for Research Achievement- Korean Society of Applied Entomology, 2004 (한국응용곤충학회 우수연구자상)
The Award for an exemplary official, Korea Forest Service, 2004 (자랑스러운 산림공무원상, 산림청장)