The client, a leading multinational bank, was struggling with an outdated mobile application that suffered from frequent crashes, poor user experience, and slow transaction processing times.

They required a complete architectural overhaul to support their growing user base of over 5 million daily active users, while adhering to strict PCI-DSS and banking compliance regulations.

Our Solution

We engineered a high-performance cross-platform application using React Native, allowing for a unified codebase while delivering a truly native feel on both iOS and Android.

The backend was completely decoupled using a microservices architecture built with Node.js and deployed on AWS. We integrated advanced biometric authentication (FaceID/TouchID) and end-to-end encryption to secure all financial data in transit.

Business Impact

400% increase in daily active user engagement.
Reduced app crash rate from 4.2% to 0.01%.
Decreased average transaction processing time by 2.5 seconds.
Successfully passed all third-party security and penetration audits.

Technology Stack

Frontend

React NativeRedux ToolkitTypeScript

Backend

Node.jsExpressGraphQL

Infrastructure

AWS EC2KubernetesRedisMongoDB

Security

OAuth 2.0Biometric AuthAES-256 Encryption

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