[Web Platform Team]- Supporting >500 web applications on framework, build/test, CI/CD and infrastructure tooling- Standardizing web analytics and experimentation solutions, such as GA, Optimizely and various in-house solutions- Contributing to the next-generation web framework(Koa, V-DOMs, dependency injection, Webpack, Flow)

[Driver Signup and Login, Driver Acquisition Team]- Architected the platform for high impact sign-up landing pages consolidation and A/B testings. Hundreds of views per sec.- Created novel UI flows/components for security features, such as reCAPTCHA, 2FA/SMS verifications- Lead page performance studies and experiments with Navigation Timing API, CSS-in-JS solutions, code-splitting…etc.- Customized and launched regional signup experiences, and adapting regulation compliances

* Built modularized product UI and enterprise front-end web application in Marionette/Backbone* Designed sophisticated interactive infographics such as broken-line chart on timelines with expandable details with D3.js* Managed front-end style consistency in SASS/Compass, such as customized grid system, animations, and color swatches* Architected efficient, defensible and RESTful API in Scala Play, capable of identifying performance bottlenecks agilely* Optimized front-end performance, e.g. restructuring JSON schema, and eliminating SVG pattern rendering delays* Made API improvements on CORS security concerns, and implemented customized body-parser for uploading files