react js web application, our machine learning model is done and we need a web application and deploy it to cloud and also mango db

I am looking for a freelancer to develop a React JS web application with the following features:

- User authentication and authorization
- Integration with external APIs
- Teach me step by step about the cloud computing and the web application with javascript

The project does not require an existing backend or APIs to integrate with. However, I can provide the necessary information for the freelancer to set up the backend.

The timeline for the project completion is within a week.

Ideal skills and experience for this job include:
- Proficiency in React JS
- Knowledge of user authentication and authorization techniques
- Familiarity with integrating external APIs
- aws cloud computing