Project Overview
A fintech startup needed a secure, cross-platform payment app that could handle high transaction volumes while maintaining PCI DSS compliance and delivering a native-quality UX on both iOS and Android.
Our Approach
We chose Flutter for the cross-platform mobile layer and built a Node.js microservices backend with dedicated services for auth, transactions, notifications, and fraud detection.
Results
- 50,000+ transactions processed daily
- PCI DSS Level 1 compliance achieved
- App Store rating: 4.8/5 (iOS + Android)
- Zero critical security incidents in 18 months
