I think the proper term for the job should be
Prompt Alchemist.
We've seen this before. Back when Google was a search engine, you'd eventually get a feel for how things worked, and build a vocabulary of "spells" that give the results you want, without using the common words with many overloaded meanings. (Example: Annotation instead of mark up, when trying research the Marking Up of Hyperlinked Texts)
Similar things proved to be true of Stable Diffusion and the image generators. It seems quite reasonable to conclude the same will be true of GPT4 and its kin.