Custom Admin Dashboard Developer Needed (Flutter, Firebase, PHP)

I'm looking for an experienced full-stack developer to build a custom admin dashboard for a Flutter app backed by Firebase. The dashboard should have a clean, minimalist design and robust functionality to manage the platform.

Core Features:
- Firebase Integration
- Comprehensive Data Visualization
- Content Management (Articles, Quizzes, Categories)
- Feedback Management
- Notification System (In-App, Push)

Other Key Features:
- Secure Admin Authentication
- User Management (Roles, Permissions)
- Content Packaging & Distribution
- Content Localization
- Import & Export Functionality
- Settings & Integrations
- Security & Compliance
- Performance Monitoring & Optimization

The ideal candidate should have:
- Proven experience developing admin dashboards
- Expertise in Flutter, Firebase, PHP
- Strong design sense for clean UI/UX
- Knowledge of user management, data viz, content systems
- Ability to ensure security, performance, compliance

Your role will be to implement these features using PHP (or else) and Firebase. I'm open to suggestions and improvements on the features list.

Please provide examples of your previous work and an outline of how you would approach this project. Looking forward to hearing from you soon.