I want to split this build into two clear pieces so development can move in parallel. First, the back-end: a Java service that exposes a straightforward RESTful API. It should accept JSON payloads, run the necessary processing logic, persist the results, and return well-structured responses... (Budget: $1000 - $2000 USD, Jobs: API Development, Flask, Java, JavaFX, JSON, Large Language Models (LLMs), Python, REST API, Software Architecture, Spring Boot)
