Student File Upload Web App

I need a web application developed on Spring Boot and React, with a Java backend and Postgres database. It is intended for use by students, and the key functionality is file upload.

Key Features:
- User Registration & Login: Users should be able to register an account and log in securely.
- File Upload: The main functionality of the application is to allow students to easily upload files.

Ideal Skills:
- Proficiency in Spring Boot and React: The core technologies of this project.
- Java Development: For the backend.
- Database Management: Experience with managing databases, particularly with Postgres.
- User Authentication: Knowledge of secure user authentication methods.

Please provide examples of similar work you've done in the past, especially if it involves file uploads, user registration and login.