Worked as a Technical Account Manager (TAM) in Alibaba Cloud 2B team.My job mainly involves visiting customers within an assigned area to ensure that their services are functioning well and advise customers of opportunities for additional services, products, or solutions

Worked in the search engine & recommendation system team at Pinduoduo.My job was to build/maintain a large scale recommendation system that can scale to over a billion users, handles more than 10,000 QPS, and providing personalized shopping experience to all customers.

在京东广告部门实习了两个多月，从事后端研发相关的工作，搭建了一个服务于内部人员的 BI 数据平台。可以方便的从 Excel 里导入/导出数据到网页app里，并按照用户的 query 进行数据排序、展示和可视化。技术栈：Node.js, Express, MySQL.