Hello @Smile90 - welcome to the community!
To answer your questions you should review open positions for such profession. For instance here:
https://www.indeed.com/q-ai-prompt-engineer-jobs.html?from=relatedQueries&saIdx=1&rqf=1&parentQnorm=prompt+engineer&vjk=3dd88f6e6c08a3c4
If you are looking for other AI related professions you can have look on this post:
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