Automatic java JUnit generation with AI

Looking for a strong AI developer who can implement a custom LLM, which can be used to generate test cases for both legacy and modern java frameworks. The LLM should be capable of understanding various frameworks (Spring Boot, MVC, Batch, AOP, etc) to generate the required unit test cases. The generated test cases should have atmost quality and provide good coverage. In case of any new enhancement in the project, the LLM should generate the junit only for the newly added/updated code. Also ensure, the consistency in the generated junit on multiple executions.