A Full Stack Flutter Developer specializes in using Flutter for both front-end and back-end development to create complete, functional applications. Flutter, originally a UI toolkit for building natively compiled applications for mobile from a single codebase, has expanded its capabilities to web and desktop applications as well.

Front-End Development with Flutter

1. Flutter SDK: Proficiency in using Flutter for developing cross-platform applications. This includes understanding Dart, Flutter’s programming language.
2. UI/UX Design: Designing and implementing user interfaces with Flutter’s rich widgets. Understanding principles of user experience (UX) design to create intuitive and user-friendly applications.
3. State Management: Knowledge of state management solutions in Flutter like Provider, Riverpod, Bloc, or Redux to manage the state of the app efficiently.
4. Responsive Design: Building apps that work on a variety of screen sizes and devices, from smartphones to tablets and desktops.

Back-End Development for Flutter

While Flutter is predominantly a front-end framework, a full-stack Flutter developer also handles back-end services:

1. Server-Side Language: Using languages like Node.js, Python, Java, or PHP for server-side logic.
2. Database Integration: Connecting Flutter apps with databases such as Firebase, PostgreSQL, MongoDB, or MySQL.
3. API Development: Creating RESTful or GraphQL APIs that the Flutter front-end can consume.
4. Authentication: Implementing user authentication using services like Firebase Auth or OAuth.