Papan Manna

Led end-to-end development and maintenance of the BookMyForex Android application supporting 100K+ active users with high performance and reliability. Delivered core product features using MVVM architecture, Kotlin Coroutines, and dependency injection, improving development velocity and maintainability. Reduced ANRs and crash rates by ~30% through performance tuning, refactoring, and improved memory and lifecycle management. Integrated Firebase services including Push Notifications, Crashlytics, Dynamic Links, Remote Config, and In-App Messaging to improve user engagement and issue tracking. Strengthened application security through encrypted storage and secure data handling practices. Migrated critical native flows to Next.js embedded via secure WebView, reducing development effort for shared web features. Designed and implemented a native-to-web bridge SDK enabling reliable communication between mobile and web layers. Led adoption of React Native, revamping ~30% of screens and accelerating cross-platform feature rollout. Optimized payment and forex transaction workflows, significantly improving transaction success rates. Mentored developers, reviewed architecture decisions, and ensured long-term platform scalability.