Flutter App Revamp: Logo, Menu & Payment

Project Title:
Flutter App Modifications (Logo Update, New Menu Section & Payment Gateway Integration)

Project Description:

I have an existing Flutter mobile application and I own the full source code.

I am looking for an experienced Flutter developer to perform the following tasks:

Replace the current app logo and app icon with a new one.
Add a new menu section/page within the application.
Develop and integrate the required screens inside the new section.
Integrate a payment gateway and connect it properly with the app.
Ensure compatibility and proper functionality on both iOS and Android.
Test all modifications and fix any issues related to the new implementation.
Deliver the updated source code upon completion.

Requirements:

Strong experience with Flutter development.
Previous experience integrating payment gateways.
Clean and maintainable code.
Ability to communicate progress and provide updates during development.

Additional Information:

Full Flutter source code is available.
The new logo, menu details, and payment gateway information will be provided after project approval.
Preference will be given to developers who can share previous Flutter projects or portfolio examples.

Please include your estimated timeline and cost in your proposal.