Secure Spring REST Endpoint with JWT

I'm in need of a skilled developer to create a Spring REST Endpoint. This endpoint should facilitate the uploading of CSV files, and it should be well-protected - only accessible to users with a valid JWT token, issued via Auth0. Below are the specifics for this task:

- **File Type Support**: The endpoint needs to handle CSV files. No other file types are required at this stage.
- **Validation**: No validation is required for the structure or content of the CSV files. The focus should be on securing the endpoint and validating the JWT token.

Ideal Skills:
- Proficiency with Spring Security
- Experience working with JWT tokens, specifically those issued by Auth0.
- Previous projects that involve file upload/download functionality.