+5 years online performance marketing. Specialized in online B2C industries(Travel, Shopping). The analytical power to create a revenue with data-driven insight. Experience of leading target advertisers from the entry stage in Korea to the top brand in the market. #Mastery SEM(=Search Engine Marketing, Search Ads) / Performance Marketing / Data-driven Marketing / Tune the ad-Efficiency(ROI, ROAS) / Maximize the ad-Effect(Revenue, Session)