Is this a male or female artist or the same form for both?
As it comes to an employment (formal setting), it does not matter.
Zatrudniam artystę (kobietę lub mężczyznę) - I employ an artist
Well... I understand that it may not exactly always matter, e.g. in a job offer, but "artysta" is for a man while "artystka" (Zatrudniam artystkę) is for a woman.