Quarkus Web App Backend Refinement

I'm seeking a talented developer to enhance my Quarkus Web App's backend following a recent review. The app is currently operational, but requires some modifications to improve its existing functionalities. While there are no new features to be added, the focus will be on refining the current system.

Ideal Skills:
- Proficiency in Quarkus framework
- Strong backend development experience
- Familiarity with API integration and database management
- Capability to perform performance optimization tasks

Please find review comments below:

All classes are in same folder, please move the classes to respective folders like controller, services, etc.
Place different services like
Main logic
Database
Joke service
There should be dto for each layer
While fetching Api response
While saving database
While
Please go through requirement
Reactive code is mandatory
I saw you implemented batches but each batch should execute parallelly
Yours API response is not as expected please go through Open API spec.
We need to save the records into database but I did not found any database code. Make sure a record should be inserted if record is not present in database because we are fetching jokes randomly from Joke API, there is a chance same Joke can execute multiple times.