Looking for an expert in java software design for mentoring

Hi - Looking for a mentor who is expert in software design and high level core java programming. I work for Google as a software engineer. My goal is that my peers at Google see me as great java programmer, and I do better job in our code reviews. Here is what I am thinking: you give me some programming assignment to do using core java. Using an online source code tool like github I do a java assignment. Then you review the code by commenting on the code. I make changes and you review again. We do this till our code passes your code review. This simulates my office code reviews and will increase my confidence when submitting my code for code reviews. We can meet once or twice a week for 30 minutes each and evaluate my assignment and give me mentorship. I can't share my work files or talk about them. Our discussions will be on the assignment you give me. Share some of the core java code you have written so I can see your coding style and java skills. Let me know if you would be interested.