Revamped Groupon's pricing system - Pricing System 2.0.

• Team Lead: lead an engineering team of five, responsible for the company's Competitiveness track. Daily work include leading daily standup, weekly sprints, design reviews, implementations, rollouts, monitoring, and leading retrospectives.• Take complete ownership end to end: requirements discussions with PMs, design docs and reviews, implementation, testing, monitoring, and customer troubleshooting.* Fullstack development in Python, PHP, data pipelines, Javascript, CSS.• Design table schema for large data set, and optimize query for real-time query performance• Build user-interactive views with javascript, jQuery, HTML, CSS and some third-party libraries

Core engineer in designing and implementing Box Appplicant Tracking System(ATS) -- a customized web application for efficiently managing incoming resumes and potential Box hires.-- Build business logic and UI on top of Salesforce-- Use Force.com and Box API to make data storage-- Design database schema