Uber

I was referred by a friend and received the test link via email a few days after applying. After clearing the interview, they called and said they had already filled the position internally. Such a waste of time it was.

I applied through an employee referral. The process took two weeks. It was an average interview experience. They reached out but then had scheduling issues, as well as rude behaviour by the HR. The tech panel was nice and smart, and they gave hints

All three coding questions were advanced level, and the time allotted was 90 minutes. For a person not from a CS background, it is a difficult test. However, data structure concepts are really important, such as trees, graphs, and queries.