So in your opinion, can you grow out of the need for a job mentor if you've been with the company for a while?
Sure, and I think a great way to give back is to eventually become a mentor yourself.
I love that mentality. It's the exact right frame of mine to be in.
Another thing to note, to expand on what you said a bit, as you grow in your career/company, you can continue to utilize job mentors, they will just change in their roles and responsibilities. When you get promoted and have additional duties, you will have new peers/job mentors who can guide you along and give you the lay of the land and answer any new questions you might have.
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