We have the specifics sorted for the right developer. You would ideally need to have the cheat development history to land this job. The Game has an anti cheat which you would need to bypass using kernel mode injection. The cheat needs a loader with the ability to cater to many users and would need to assign keys to users on the forums after they make a purchase which they can use to access the cheat when they launch the loader.
The cheat source code is already setup, you need to find an anticheat bypass, rework the UI and make sure all the features work and are upto date.
This will be an ongoing job.