Payment Flow Fix - Laravel+React Developer required (Payment API & Database Status Update Fix)

I have an existing PHP Laravel + React.js web application and need an experienced developer to fix an issue in the payment flow.

Required Work

- Fix the payment page frontend in React.js
- Fix/integrate the payment API with the Laravel backend
- Ensure payment success/failure responses are handled correctly
- Update the relevant database payment/order status automatically after successful payment
- Verify backend API response and frontend payment confirmation
- Handle payment failure, cancellation, and pending states properly
- Debug the existing Laravel, React, API, and database code
- Ensure the complete payment flow works correctly without affecting existing functionality

Requirements

- Strong experience with Laravel/PHP
- Strong experience with React.js
- Good knowledge of REST APIs and payment gateway integration
- Strong MySQL/database knowledge
- Experience debugging existing production applications
- Ability to start quickly and complete the task efficiently

The application is already developed. I only need the existing payment flow fixed, not a complete application from scratch.

Please mention your relevant Laravel/React/payment integration experience when applying.