Hi, Amckinator.
I think I am the person you are looking for. I am a C++ and Python Developer that has quite the experience with it. Specifically, you are looking for a programmer that can make your custom game engine, and I think I'd be able to do it, because I have made a game engine myself. Primarily, I am experienced more with C++, but Python is also my strong suite. My very own custom game engine framework is published on my GitHub page and is still under development.
Contact me on Discord, @_an1ss_. We will discuss further there