One round phone interview and one round online interview (including presentation). And I get one more test after the interview. I have already get the offer, but after that the HR said I need to do a test to decide whether to get this offer. I am a little unhappy about this process. I think they made an error.

After brief self introduction within 2 minutes, senior asked me about my experience, my master dissertation, and regular bq. (including what's my disadvantage and advantages; what's the most difficult thing) Got the offer a week later.