flutter-developer

Clean architecture in Flutter organizes code into lib/core, lib/features, and lib/shared directories, separating concerns and improving testability. Structure features by domain, isolate business logic from UI, and use dependency injection to manage dependencies across layers.

State management in Flutter depends on complexity: use Provider for simple cases, Bloc for medium-scale apps, or Riverpod for advanced patterns. Choose based on your project size and team familiarity; all three integrate well with clean architecture.

Minimize rebuilds by using const constructors, separating state into focused providers or blocs, and profiling with DevTools. Profile memory and frame rates regularly, avoid rebuilding entire widget trees, and use ListView.builder for large lists.

Flutter supports cross-platform development for mobile, web, and desktop from a single codebase. Use platform-specific code conditionally, adapt responsive layouts per target, and test each platform's performance and UI rendering separately.

Use flutter_secure_storage for sensitive credentials, Hive for non-sensitive local data, and Dio for HTTP requests with interceptors. Configure encryption, handle errors gracefully, and validate API responses before storing or displaying data.

Freezed generates immutable data classes with copy, equality, and serialization support, reducing boilerplate and preventing bugs from mutable state. It works seamlessly with code generation tools and integrates with clean architecture patterns for type-safe models.