projects. The average search result ranking rose from 9 to 7. Impression and clicks grew over 100% (YoY). Led App Store Optimization projects, and the app was selected by App Store as Editors' Picked for more than 10 times. Enhanced purchase & free trial user flows and reduced the bounce rate by 9.06% within 3 months. Formed features for new biz models, including 4K video, Video Download Service , EST services, and Theme Pages. Tracked key performance indicators by using Google Analytics, GA4, Firebase, & Tableau. PM/UIUX Designer, Hiiir Inc. 2015