Developer for Payment Gateway Integration

I am seeking a skilled and experienced mobile application developer to integrate and implement the Tap payment gateway into my mobile application. The integration should be smooth and seamless, using the provided SDK and API keys. The primary goal is to ensure that the payment gateway functions properly and securely, without any errors, and provides a flawless user experience.

Requirements:

Proven experience in integrating payment gateways, preferably with Tap or similar services.
Proficiency in the programming languages and frameworks used in my application (please specify if it's for Android, iOS, or a cross-platform framework).
Strong understanding of API integration and handling secure data transactions.
Ability to implement the payment gateway according to the documentation provided by Tap.
Ensure the application functions correctly with the new payment gateway, including thorough testing in both sandbox and production environments.
Troubleshoot and resolve any issues that arise during and after the integration.
Clear and effective communication throughout the project.
Deliverables:

Fully integrated Tap payment gateway in the mobile application.
Documentation of the integration process and any necessary steps for maintenance or future updates.
A tested and functioning app with no errors related to the payment gateway.
Additional Information:

I will provide the Tap SDK, API keys, and any other necessary documentation.
Please incl