Developing Shopify Ping App (iOS + Android + Web) for Shopify merchants to talk to customers from all channels in 1 place. Using React Native, Redux toolkit, and GraphQL, developed features including fetching and rendering conversations and the Settings page. The first version was launched in Google Play Store in 3 months, 10,000+ downloads.

Adding team conversation functionality in Ping App, including showing and searching the team member list and conversations and sending, polling, paginating messages. Using React Native, Redux toolkit, and GraphQL.

Adding React Native tests using Jest and Enzyme to ensure the conditional rendering on UI and unit test coverage.

Implemented the full-stack system for managing Success Customer Stories. Including create, update and tagging the stories. Front-end: React, Back-end: Java, Spring Boot, Database: MySQL, Docker, Flyway

Maintained notification features, including push notifications, email, SMS and MFA. Integrate Health with New Relic and helped build AWS SQS service for order creation.

Led a team in an Ancestry hackathon, responsible for product ideas, design, front-end implementation, and presentation.

Developed a new shopping cart that supported 100 orders per second. Front-end: React + Redux. Back-end: Node.js + Python. Infrastructure: Webpack, npm, Docker.

The Front-end application is React \& Redux, the Back-end is Node.js and Python. The pages are heavy on validation and used Redux-form, also support multiple languages (i18n). The building process uses Webpack, npm, and Docker.

Established a new website teaching children from all over the world to speak Chinese. The website includes web pages and mobile version, using Vue + Vuex, and finished in one month ahead of schedule. We gained hundreds of paid users in 4 months. https://www.lingobus.com/

Designed and implemented the e-commerce order placement and payment processes in WeChat and PayPal interfaces, which has been using by thousands of users.

Improved the team's code quality by migrating code correction tool JSHint to the latest one ESLint, and published a summary of usage in a leading Chinese technique website.