Where does “pomojnic” come from?

pomojnic (Romanian) comes from Russian помо́щник, from Russian по́мощь, from Old Church Slavonic помощь, from Proto-Slavic pomoťь, from Proto-Slavic moťь, from Proto-Indo-European mógʰtis, from Proto-Indo-European meǵʰ- — to be able.

pomojnic (Romanian): clerk