All work

Case study

FinTech

Payment Gateway API

Secure payment processing API handling RMB and international currencies at high throughput.

$2M+Daily Volume
< 300msAvg Response
PCI-DSSCompliant

The Challenge

Achieving PCI-DSS Level 1 compliance while supporting CNY, USD, and HKD settlements with real-time FX conversion and sub-300ms response times.

Built with

Node.js PostgreSQL Redis AWS KMS