"Doctor" doesn't necessarily have to refer to a physician - could be a scientific title.
Napisałam "doktor" zamiast "lekarz" ale według uch, to błąd.
W zasadzie w potocznej polszczyźnie doktor=lekarz. W oficjalnej wersji doktor to tytuł naukowy (like professor or bachelor of science).
OK, dodałem "doktor".
I can't figure out what case pracy is in here.
"po" in the meaning "after" takes Locative. Ignore the name of the case, it's not just about location ;)