We are seeking a skilled Flutter Developer with 3-4 years of hands-on experience to join our development team. You will be responsible for building high-quality, performant cross-platform mobile applications for iOS and Android, with a focus on delivering exceptional user experiences and maintainable code.

Key Responsibilities

1. Application Development

• Design and develop cross-platform mobile applications using Flutter/Dart
• Build reusable widgets and components following Flutter best practices
• Implement responsive UI/UX designs that work seamlessly across different screen sizes and platforms
• Write clean, maintainable, and well-documented code
• Optimize application performance and ensure smooth 60fps animations
• Apply proper separation of concerns (UI layer, data layer, domain layer)

2. Architecture & Design Patterns

• Implement MVVM or Clean Architecture patterns in Flutter applications
• Use the Command Pattern to handle async operations and their states in view models
• Implement the Repository Pattern to abstract data sources and business logic
• Use Result objects for consistent error handling across application layers
• Design and implement offline-first features with local caching and sync strategies
• Apply optimistic state updates to improve perceived app responsiveness

3. Testing & Quality Assurance

• Write and maintain unit tests, widget tests, and integration tests
• Implement test-driven development (TDD) practices where applicable
• Use testing frameworks like flutter_test, mockito, and integration_test
• Conduct code reviews and ensure code quality standards
• Debug and troubleshoot issues across different devices and OS versions

4. API Integration

• Integrate RESTful APIs and GraphQL endpoints
• Implement proper error handling and retry mechanisms
• Work with JSON serialization/deserialization
• Manage API state using providers (Provider, Riverpod, Bloc, etc.)
• Handle authentication flows (OAuth, JWT, etc.)
• Implement proper API caching strategies

5. Payment Integration

• Platform-Specific Payment Integration:
• Implement In-App Purchases (IAP) for iOS using StoreKit
• Implement In-App Purchases for Android using Google Play Billing
• Handle subscription management, receipts, and purchase verification
• Manage consumable and non-consumable products
• Third-Party Payment Gateways:
• Integrate payment solutions like Stripe, Razorpay, PayPal, or similar
• Implement secure payment flows and PCI compliance best practices
• Handle payment webhooks and transaction status updates
• Manage refunds and payment error handling

6. Deployment & Publishing

• Build and prepare apps for production release
• Generate signed APKs/AABs for Android
• Create iOS builds and manage certificates/provisioning profiles
• Submit apps to Google Play Store and Apple App Store
• Manage app versioning and release notes
• Handle app updates and staged rollouts
• Monitor crash reports and analytics post-deployment
• Implement CI/CD pipelines for automated builds and deployments

*Required Skills & Qualifications

Technical Skills

• Strong proficiency in Flutter and Dart
• Solid understanding of mobile app architecture patterns (MVVM, MVC, Clean Architecture)
• Experience with Flutter architecture design patterns:
  • Command Pattern: Wrapping methods to handle different states (running, complete, error)
  • Repository Pattern: Separating data layer from UI layer
  • Result Objects: Proper error handling across application layers
  • Offline-first Architecture: Implementing local caching and data synchronization
  • Optimistic State Updates: Improving perceived performance in UI
• Experience with state management solutions (Provider, Riverpod, Bloc, GetX, etc.)
• Proficiency in asynchronous programming (Futures, Streams, async/await)
• Knowledge of platform-specific code integration (Platform Channels)
• Experience with local storage solutions (SharedPreferences, Hive, SQLite, SQL)
• Familiarity with version control systems (Git)
• Understanding of Material Design and iOS Human Interface Guidelines
• Understanding of separation of concerns (UI layer, data layer, domain layer)

API & Backend

• Strong experience with REST API integration
• Knowledge of API authentication methods (OAuth 2.0, JWT)
• Experience with WebSocket connections for real-time features
• Understanding of API versioning and documentation

Payment Systems

• Hands-on experience with at least one payment gateway integration
• Understanding of PCI DSS compliance basics
• Experience with both platform-specific and third-party payment solutions

Testing

• Proficiency in writing unit tests and widget tests
• Experience with integration testing
• Familiarity with test coverage tools
• Knowledge of debugging tools and techniques

Deployment

• Experience publishing apps on both Google Play Store and Apple App Store
• Knowledge of app signing, certificates, and provisioning profiles
• Understanding of app store guidelines and review processes
• Experience with beta testing platforms (TestFlight, Firebase App Distribution)

*Preferred Skills