I joined the startup Dermvpure(德尔美客), responsible for building online mall system and ERP system from scratch, working with ReactJS, Redux, Webpack, ExpressJS, Flask, SQLAlchemy and etc. Also interesting in Sales(how to sales out of medical beauty plastic surgery services) and BD(how to touch target users).

Lead of an RD team(5 members), focused on architecture refactoring and data migration. The tech stack includes Java, Spring, ElasticSearch, Codis and etc.

I worked in Wandou Labs as a senior engineer, mainly focused on front-end development, including data visualisation and BI systems. - Core developer of WanDouJia client, which is the most important product of Wandou Labs(DAU ups in millions). And Limbo system which enables users to manage their mobile phones via web browser. The tech stack includes AngularJS, RequireJS, Grunt, Bower, WebSocket etc. - Built data visualisation system(Royals) from scratch, it provides data component embedding for all departments. Royals worked with D3, ReactJS, ExpressJS and run in NodeJS, so that it can render data in server client for improving the user experience. - Built realtime user behaviour statistics system base on Marmot, Apache Flume and Apache Spark Streaming. - Cooperated with the data mining team on building the company wide BI system(Muce), to support daily data analysis, reporting and core indicator monitoring. - Built short video App (Eyepetizer) as a beginner of Android developer, which had been successfully split out from WanDou Labs. - Won the 2nd place in 2011 Hack-day, the project 'Business Helper’ which is an automatic data analysis tool, could save 80% of the BD’s time.

I joined Baidu e-commerce department(Youa) as a front-end engineer in 2009. Here I participated in building the Baidu Mall System and won the "Best New Engineer " award of the year 2010.My job includes: - Core developer of the Online Ticketing System. - Developer of Baidu Pay Platform, Online Lottery System, Baidu Mall Business Edition. - Mentor of interns.