[Paid] Unity 3D developer to create runtime (in-game) terrain editing tools

I'm looking to hire someone to lay the groundwork for a tycoon/management style game. I would like to be able to "paint" the terrain with different textures, and also change the terrain height etc, in game. If this is something you think you are capable of doing, please reach out.

An example would be like this gif, when they are drawing the sandtrap on the terrain:
https://cdn.akamai.steamstatic.com/steam/apps/1144020/extras/golf_gif_build3.gif?t=1605729259

Thanks