Minister
| 2011.12 ~ Present: |
Vice Minister for Trade and Energy, Ministry of Knowledge Economy (MKE) |
| 2011: |
CEO of Korea Industrial Complex Corporation |
| 2009: |
Deputy Minister for Industry, MKE |
| 2008: |
Director General for Industry and Knowledge Economy, MKE |
| 2006: |
Director General for Energy and Resources Policy, Ministry of Commerce, Industry and Energy (MOCIE)
Director General for Electronics, Textile and Chemical Industries, MOCIE |
| 2004: |
Director General for Nuclear Power Industry, MOCIE |
| 2001: |
Director, General Services Division, MOCIE |
| 1998: |
Assistant Secretary to the President, Office of the President |