Mar 2005 ~ Jul. 2006:

The title was Senior Engineer in commercialization team. And the main role was S/W sub-project leader for SGH-V804 targeting Japanese Carrier, Vodafone K.K. (Currently Softbank), and SW Project Leader targeting European Open Market for 3G (UMTS/GSM/GPRS) mobile handset.

July 2004 ~ Feb 2005:

The title was Senior Engineer in commercialization team. And the main role was sub-part leader for BREW team with 4 Korean software engineers and 2 outsourcing company for leading & developing BREW based user interface.

Sep. 2002 ~ Jul. 2004:

The title was Senior Engineer in commercialization team. The main role was sub-part leader with 4 Korean engineers and 3 Indian engineers. The target was Korean carrier, SKT for dual-band/dual-mode (DBDM) supporting CDMA 2000 & UMTS protocol model.

Jul. 2000 ~ Sep. 2002:

The title was Engineer in R&D team. The main role was test sub-part leader with 3 Korean engineers in U.S. for 4 months. The target was Korean carrier KTiCOM. The detail achievement was leading and development of TTCN Test Cases for UMTS protocol stack signalling after 4 weeks training course for Telelogic SDL and TTCN.

Feb. 1998 ~ Jul. 2000:

The title was Engineer in R&D team. The main role was CDMA 2000 layer 3 SW designer.