Urgent Laravel & Flutter System Modifications

I need a highly skilled Laravel and Flutter expert to modify an existing system within a very tight timeframe. The project involves both a Web admin panel and a Flutter Mobile App.

Key Requirements:
- Modifying the User Interface: The UI needs to be updated to accommodate new features and improve overall user experience.
- Enhancing Backend Functionality: I need the backend to be optimized for better performance and to support the addition of new features.
- Integrating with Third-Party Services: The system needs to be seamlessly integrated with various third-party services.

Goals of Modifications:
- Adding New Features: Some new functionalities need to be incorporated into the system.
- Fixing Existing Bugs: The system is currently experiencing some issues that need to be resolved immediately.

The ideal candidate for this job should have:
- Extensive experience in Laravel and Flutter
- Proficiency in modifying both user interfaces and backend functionality
- Prior experience with integrating systems with third-party services
- A knack for debugging and problem-solving
- Ability to work under tight deadlines without compromising on quality.