Separate business logic from UI with reactive state management
BLoC (Business Logic Component) is a design pattern for Flutter apps. Proficiency earns $100-135k junior, $140-175k mid-level, $210-270k senior mobile architect roles.
BLoC (Business Logic Component) is an architectural design pattern for structuring Flutter applications. It separates business logic from the UI layer using streams and event-driven architecture. BLoCs are classes that accept events (user actions), process them, and emit states (UI data). The pattern promotes testability, reusability, and scalability in large Flutter apps. - Separation of concerns: Business logic lives outside widgets; easy to test independently
| Region | Junior | Mid | Senior |
|---|---|---|---|
| USA | $80k | $150k | $245k |
| UK | Β£58k | Β£109k | Β£178k |
| EU | β¬54k | β¬102k | β¬168k |
| CANADA | C$89k | C$166k | C$271k |
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