Amgen Software Engineer interview questions

First interview is a coding test. 6 panel skype video interviews (30 minutes each) followed up. Asked a lot about my background and experience, technical question are that hard.

I applied online. Got selected for the next round which was a short Hacker Rank technical interview. Final Round was 3 face to face interview at the office on the same day with an individual person or a panel of two. 1 - 30 mins HR interview (very professional HR who asked behavioural questions) 2 - 30 mins interview (casual, questions on past experience and resume) 3 - 1 hour technical interview (panel of 2 interviewers, one of them was very unprofessional, rude and disrespectful. Highly demotivating. Even if I would have got the position, would not have worked for that manager at any cost. Overall took 4 weeks from applying online to final reply * Applied for a role , in the final round was being interviewed for some other role (Confusion)