▪ Core team member of new payment system migration project. Led payment data reconciliation and data cleanup scrum team to process 9-year payment data generated by multiple payment processors.

▪ Integrated with Stripe APIs and built bank forms on campaign onboarding lifecycle in order to support multi-currency payment.

▪ Integrated anti-abuse service APIs into payment flow to reduce fraud on payments and chargebacks.

▪ Built tools and dashboards based on Ruby on rails and Angular 1.x for internal Trust & Safety team to improve the efficiency of reviewing campaigns for weekly disbursements.

▪ Built new payment dashboard based to integrated all payment related data for internal teams using Ruby on Rails, Vue.js, Vuex and GraphQL.

▪ Project lead for Android app and built it from scratch and released to Google Play store in 6 weeks, along with another intern, using React Native and Redux. Unit testing and integration testing are included.

▪ Designed and Implemented Ruby on Rails base RESTful APIs for mobile clients, including in-app purchase both iOS and Android platform.

▪ Integrated Vanity a/b testing framework to website and used a/b testing result to improved website.

▪ Built multiple responsive web pages with Sass, Bootstrap, and jQuery.

▪ Implemented weekly recommendation algorithms and email templates and scheduled cron_job to send email.

▪ Integrated Ruby Rspec unit testing framework and wrote unit test cases for APIs and business logic.

▪ Integrated third party APIs on website and integrated third party SDKs on React Native Android App.

▪ Built multiple MVC and Ruby on Rails based internal tools for staffs and admin.

▪ Implemented responsive landing pages with Sass, jQuery and Ruby on Rails.

▪ Increased customer retention rate by designed and built a reward mechanism for the website.

▪ Integrated Google Analytics for reward mechanism and improved UI design from data.

▪ Fixed bugs, and used Photoshop to edit banners and ads images.