FlutterFlow App Bug Fixes and Enhancements

I've developed an app using FlutterFlow and I need some help to fix minor bugs and complete a few functionalities within a week.

Requirements:
- Fix UI Design Issues
- Resolve Navigation Problems
- Complete some minor functionalities that are needed

Additional Tasks:
- Data fetching and display
- Implementing a payment gateway
- Setting up redirect functionality
- Automating OTP generation
- Completing a few more minor tasks

Skills and Experience Preferable:
- Proficiency in Flutter and FlutterFlow
- Experience with UI/UX design
- Familiarity with payment gateway integration
- Skills in data fetching and display
- Previous work involving OTP generation and redirect functionality

The most crucial tasks are integrating the payment gateway, automating OTP generation, and setting up the redirect functionality. I'm looking for someone who can complete these tasks in a timely manner.