Harold Yin Email & Phone Number

Shanghai, China

- My responsibilities crossed over from back-end to front-end, improving page performance, meeting SEO metrics, acquiring off-site traffic and acquiring user traffic from 0 to 10w+ for [Trip.com](http://trip.com/moments).- Responsible for the development and maintenance of Ctrip UGC service, technical tools including ES, Mysql, Redis , message queue, etc Undertake A/B experiments to improve user retention rate.- Responsible for data management of review/Q&A business, optimizing slow sql and using Datax big data engine for data migration.

Shanghai City, China

• Working as a key contributor to maintain the tier one supply chain management Application -Product Stewardship. Product Stewardship received a Top Product of the Year Award in the elite Environment + Energy Leader Awards program in 2020 and ranked 2nd in Product Compliance digital solutions as published in the latest Verdantix report.• Leading and developing in multiple projects with tight deadlines and supervised other employees. Participated in projects covering the back-end interface, database design and front-end visualization.• Responsible for maintaining several applications and Refactored Survey System Application's code, including improving the UI and user experience, has increased response speed by about 30%.