Pet Sitter Job in Indianapolis, Indiana

Hello, I am looking for someone to train my three year old German Shepherd Mix, Hustle. Hustle came to me five months ago as a stray, and didn't know any of the basic commands. Fast forward some time and he's learned most of the basic commands but won't hold them for a long period of time or around distractions. Hustle also came to us with some people reactivity and dog reactivity/aggression. I believe that as a pup he was never properly socialized with dogs, and so now because of that, he tries fights every dog that he sees. Pulling on the leash is also a problem I have with him because of his reactivity. People coming near him (especially children) make him tense up and go crazy in public. He also isn't always confident around men, sometimes he'll cowar towards them and other times he'll just bark and growl at them, not letting them come too close.