Flutter Developer (Mid - Senior)

🚀 We’re Hiring | Flutter Developer (Mid - Senior)

📍 7Solutions Company Limited under the Lotteryplus Co., Ltd.
📍 On-site, Thonglor, Bangkok
💻 Full-time

Basic Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
• Solid experience with Flutter and Dart, building and maintaining cross-platform mobile apps.
• Hands-on software development experience, including building and shipping production apps.
• Knows the mobile app lifecycle and how to release to the App Store and Google Play.
• Comfortable with Git and team workflows such as branching, merge requests, and code review.

Must Have

• Strong understanding of object-oriented programming and how to use it in Dart and Flutter projects.

• Follows Flutter and Dart best practices, writing code that is clean, readable, testable, and easy to maintain.

• Can explain the SOLID principles and show how each one applies in a real Flutter codebase.

• Understands Flutter's core concepts well enough to explain them clearly:

  • What a Widget is, and how StatelessWidget differs from StatefulWidget
  • What BuildContext is and how it relates to the widget tree

• Hands-on experience with BLoC / Cubit for state management, keeping business logic and state apart from the UI.

Nice to Have

• Can explain InheritedWidget, how data moves down the widget tree, and how packages like Provider and flutter_bloc build on it.
• Knows common design patterns (such as Repository, Factory, Singleton, Observer, Strategy, and Adapter) and can explain how they support OOP and clean architecture in Flutter.
• Can design reusable, composable widgets with clear APIs that avoid duplicated code and keep the UI consistent across the app. The widgets should also be flexible enough to handle fast-changing business needs, such as new campaigns, layouts, or feature changes, with little rework.

📩 Interested candidates can send your CV via DM or contact our Recruitment Team. 📩 Email: [email protected]