Custom Web App Development with Python & Django

I am looking for an experienced Python and Django developer to build a custom web application for me. The application should have the following core functionalities:

- User Authentication: The application should allow users to create accounts, log in, and manage their profiles.
- Data Analytics/Reporting: The application should have built-in capabilities for data analytics and generating reports based on user activity and other relevant data.
- API Integration: The application should have the ability to integrate with various APIs as needed.

Additionally, the application will require integration with a Payment Gateway API for processing transactions.

Ideal candidates should have:
- Extensive experience with Python and Django.
- Proven track record of developing custom web applications.
- Strong understanding of data analytics and reporting tools.
- Experience with integrating third-party APIs, particularly Google API Payment Gateway APIs.
- Knowledge of implementing user authentication systems.

Please include examples of similar projects you've worked on in your bid.