04
ECOMMERCE
Refactored checkout flow for growing online store
E-commerceSMB2 months
8K
Monthly Orders
40%
Error Reduction
3.2s
Avg Checkout Time
Overview
Redesigned checkout API to reduce payment processing errors and improve transaction reliability. Added proper error handling, idempotency keys, and better logging for debugging payment issues.
Tech Stack
Express.jsPostgreSQLStripeRedis