Managing REST APIs using FastAPI, SQLAlchemy & Uvicorn

Hi,

I have a REST API written using FastAPI, SQLAlchemy & Uvicorn.

I already built it but it is still not complete.
I need someone to:
- continue what I’ve done
- and also suggest better approach to implement it using the standards and best practices.

The API should:
- Accept and respond with JSON
- Nesting resources for hierarchical objects
- Handle errors gracefully and return standard error codes
- Allow filtering, sorting, and pagination
- Maintain Good Security Practices
- Cache data to improve performance

I want someone to also be familiar with the technology used:
- fastAPI
- SQLAlchemy
- and Uvicorn.

Thank you.