Looking for a Java Developer expert in Backend java8 and Junit

I am looking For a Java Developer to Help me daily basis, I can offer Every day one hour I can pay for that with your flexible time only one hour per day or 7 hours a week,  need an Expert in java Backend Developer, who has more patience to search in a huge project code and will be able to understand quickly and will help in coding for me, I am very beginner for Java developing, I do not know some basics, I will Explain the What Changes to do IF you make Changes according to the requirement is fine for me. thank you once again.