Maintain and develop customer service IVR system via Twilio phone service

On-duty support for sales agent - new number, IVR system access, sales leaderboard

Migrate Zendesk data, such as user, comment, and ticket, to Snowflake Looker for CSC agent Debug and Refactor the codebase from the Airbrake triage report for the IVR system

Develop Dayforce and Freshservice ticket notification system for leavers, joiners, movers

Built Back-End RESTful and GraphQL API integrated with mobile application

Deployed and maintained both stage and production servers as micro-services on AWS EC2

Integrated 3rd party API and webhook to servers

Designed and implemented the referral system to trigger a 10 times user growth in 2 months

Extracted the crawled jobs from Craigslist for user and job matching system

Built Back-End web applications by express.js from scratch deployed on AWS EC2

Worked with Front-End, iOS, Android developers to build cross-platform applications

Extended project with new features, such as lint bot chat, subscribed newsletter, browsing history

Convert data from various format (relational database, access, csv) to MongoDB

Build complex logic to map and extract effective data from sources (reverse engineering)