• Conducted national research projects concerning media industries and policies, mainly ordered by Ministry of Science, ICT and Future Planning(MSIP) and Korea Communications Commission(KCC).• Performed media business consulting and organized forums regarding issues in the media industry and policy.

• Managed and operated KTF Core and Service Network by controlling load capacity and dealing with system issues.• Led evaluating and judging the functional suitability of Authentication Center Systems considering a long-term plan.• Participated in the mobile infrastructure upgrade project of launching 3G network services for the first time in Korea.• Developed software tools for collecting the statistics of servers, based on the full comprehension of system mechanisms.• Won the first-class prize for the competition of new employees of 2005 in the first year by performing NTP (Network Time Protocol) project.