- Postdoctoral Associate: 1997 - present
- Massachustts Institute of Technology, Design Laboratory
- Research Assistant: 1992 - 1996,
MIT Design Laboratory
- Teaching Assistant: MIT, Ocean Engineering
- Numerical Methods with Applications to Marine Problems, fall term, 1995
- Special Project: Computational Geometry, spring term, 1995
- Departmental Assistant:
- Seoul National University, Naval Architecture and Ocean Engineering
- Lectured part of Computational Geometry: spring term, 1996
- Massachustts Institute of Technology
- Schlumberger, Laboratory of Computer Science, Austin, TX, Dec 1997
- Seoul National University, Seoul, Korea
- Mechanical Design and Production Engineering, Dec 1997
- Naval Architecture and Ocean Engineering, Jan 1998
- Chungnam National University, Taejon, Korea, Jan 1998
- Department of Mechanical Design Engineering