I applied online. The process took 1 day. I interviewed at Lepenka (Novi Kneževac)
Interview
After they have evaluated my CV and found it was satisfying I was called for an interview. There was 10 best candidates. One by one was called for an interview. There was 4 people inside who didn't even introduced themselves. Interview took only a few minutes with few brief questions including salary expectations (which I think was the most important one).
Interview questions [1]
Question 1
Your previous experience in waste water treatment.