Designed and implemented PCI-Complaint payment system through Chase Merchant Service, Wells Fargo Account Validation Service and Affirm including authorization, capture, cancel and refund

Designed and implemented seller balance flow on sales, payout, membership fee, cancel and refund

Designed and implemented tax calculation using Vertex when refunding the customer including appeasement and partial refund

Implemented feeding data into Oracle Staging Hub using Kafka to consume data and generate financial report for order, fulfillment, cancel and return

Designed and implemented payment integration with Flutterwave using JavaScript/React on Frontend and Java on Backend

Implemented seller’s profile page with interactive features such as real-time responsive selling item table

Implemented wishlist where users can add or delete items with both frontend and backend.

Actively participated in a team of ten responsible for verification of a new generation network product

Implemented automated testing on performance with ​Groovy​ in JMeter to control testing instruments

Implemented new test service that caught over 10 upstream service bugs and optimized existing test service, resulting in a 24%

Refactored existing UI on testing service and created over 15 data analytics graph using Ali Cloud’s data visualization tool