[metters]

My best interview experiences were with companies that either documented their full interview process on their website or told me beforehand how many rounds there are going to be and what to expect during each round. This includes sending me a onepager about each interview partner, so I could get to know something about them before meeting them.

In the end there was one extra interview (after the three they told me about beforehand), but that was because my requested salary was higher than the company expected, so they wanted to make sure I was a good fit.

EDIT: Those companies also scheduled all interviews for the same day. This way I could receive the offer/rejection within less than one week.