Easy Interview about my previous jobs and my availability. Then they offered me two positions. and let me choose what would be better for me. The interview had 2 rounds on the same day, the reply was in 1 week.

Two round process, first round usually with team leads, second round with supervisors. Often done directly after each other if they like you so no time wasted. Interviewers will be from different teams as they assess your suitability not only for the role you applied. Questions are mostly competency/behavioural based.