• Meta Express Checkout Platform (Full-Stack, React, GraphQL, PHP)

• Developed Express Checkout platform client side and develop GraphQL API. Used React to build critical checkout functionality for checkout page on Facebook/Instagram Web.

• Meta Pay Security System

• Led and developed Pay Security System, built different security verification flow.

• Meta Communication Platform

• Improved reliability/privacy/capacity of Meta communication platform that serving billion level daily production traffic.

Meta Ads Metrics Platform

• Developed Ads metrics API simplification algorithms.