Viswanathababu R

Tech Stack: React Native, Redux, Firebase, Node.js, REST APIs, Google Cloud Platform, Stripe, Situm SDK, Git, Agile/Scrum

• Flight Booking System Development
  Designed and developed responsive flight search, filter, and multi-step booking screens using React Native and Redux.
  Integrated third-party REST APIs to retrieve dynamic flight listings, availability, seat maps, and fare details.
  Implemented logic for round-trip, one-way, and multi-city travel options with dynamic price updates.
• Secure Payment Integration
  Integrated multiple payment gateways including Stripe, Razorpay, Apple Pay, and Google Pay.
  Implemented secure token-based payments and built reusable components for payment confirmations and transaction history.
  Conducted edge-case testing for failed transactions, declined cards, and retries.
• In-App Food Ordering System
  Developed end-to-end F&B module allowing users to order meals before boarding.
  Managed product listing, cart logic, user order status, and vendor notifications via Firebase Cloud Messaging.
• Indoor Navigation (Situm SDK)
  Integrated Situm Indoor Positioning SDK to enable real-time blue-dot navigation across airport terminals.
  Developed POI search, direction routing, and floor switching with intuitive map overlays.
• Authentication and User Management
  Implemented secure authentication using Firebase Auth, including OTP-based login, email/password, and social sign-ins.
  Built reusable form validation hooks and managed user sessions securely using AsyncStorage.
• App Optimization & Performance Tuning
  Reduced app load time by 40% by implementing code splitting, lazy loading, and bundle optimizations.
  Used FlatList, React.memo, and useCallback to improve frame rendering during heavy data loads.
• Cloud Migration & CI/CD Involvement
  Migrated backend services from Azure to GCP and coordinated API refactoring with backend engineers.
  Assisted in implementing CI/CD pipelines for mobile deployment using Fastlane and GitHub Actions.
• Agile Delivery & Cross-Functional Collaboration
  Worked in 2-week sprint cycles using Jira and participated in planning, stand-ups, retrospectives.
  Collaborated with UI/UX designers (Figma), QA testers, and backend engineers to ensure smooth releases.

• Integrated user-facing elements developed by a front-end developer.
• Improved user experience by designing and implementing intuitive user interfaces for Java applications.
• Collaborated with programming analysts, designers and testers to identify needed features and edits.