What is the name of a professional wine taster?

its a sommelier( not sure if I got it right as far as spelling ) but what I understand that it started from the middle ages (France of course) when not only they tasted and checked that the wine was up to par but to see if it is poisoned (sucky job huh).

Now, I think it extend not just wine and champagne, but to alcohol in general, now its a job that if you got it you have like a super palate and classy and all the other high praises of being a concierge in a specialty for the affluent, . Anyone who has this title is not in a bad place .