I applied online. The process took 2 weeks. I interviewed at One More Level (Kraków)
Interview
Before the interview I was asked to perform an art test (unpaid), only after the results of which the interview was scheduled. The interview itself was in English, it was fine, but I didn't hear back from them afterwards at all
Interview questions [1]
Question 1
Technical stuff related to 3D environment production, such as what are trim sheets