Java Application, Json Database, JavaFX GUI, Actor Model and CQRS Architecture

I am looking for a Java developer with intermediate experience in Actor Model and CQRS Architecture to help me build a Java application with the following requirements:

Main Functionality:
- The application should have a user interface that allows users to interact with the system.

Json Database:
- The expected data size to handle in the Json Database is less than 1GB.

Ideal Skills and Experience:
- Intermediate experience with Actor Model and CQRS Architecture.
- Strong knowledge of Java programming language.
- Experience with JavaFX GUI framework.
- Familiarity with Json Databases and database management.

I provide a skeleton.

Please note that the project requires someone with intermediate experience in Actor Model and CQRS Architecture, so please only apply if you meet this requirement.