Mar 2025 – Present · 1 yr 2 mos

• Architecting and developing a comprehensive invoicing and ledger management mobile application using React Native with TypeScript for cross-platform deployment
• Implementing TypeScript-first development with strict type safety, custom interfaces, and advanced type definitions for enhanced code reliability and maintainability
• Building robust RESTful API integrations with TypeScript-powered service layers, implementing secure authentication flows with JWT token management and automated refresh mechanisms
• Developing real-time payment processing features with multi-modal payment tracking, automated receipt generation, and WhatsApp/SMS integration for instant payment confirmations
• Creating advanced UI/UX components including custom image pickers with automatic optimization, signature capture canvas, expandable FABs, and animated modals using React Native Animated API
• Implementing secure data persistence using Expo SecureStore with AsyncStorage fallbacks, ensuring encrypted local storage for sensitive financial data
• Integrating device native features including contact access, camera functionality, file system operations, and sharing capabilities for seamless user experience
• Building complex state management using React Context API with TypeScript generics, custom hooks, and optimized re-rendering patterns
• Developing GST-compliant invoicing system with HSN code integration, automated tax calculations, and PDF generation capabilities for Indian market compliance