Build three enterprise web applications by using various modern web techniques
NodeJS based server and YUI, React, ES6, d3 powered client,
self-owned JS library full of reusable widgets including treegrid, d3 charts
Java spring based server side and pure JS and jQuery for the client
Ruby on rails based server side and YUI boost client framework
All of them are using REST endpoints via HTTP protocol
Developed Front-end digital marketing web applications. Features includes segmentation, create campaigns.