Help me with Modifying the Game

Job ID: 31194032

Budget: $50 – $100 USD

There is this game I have an executable for. I have figured out what I would like to do with it but I need a Reverse engineer to do it for me, Specifics will be given in messages.
I think you will need experience with Hex editores. and programs such as Winhex, ollydbg, x64dbg... etc