Proofpoint

Typical recruiter vetting, then interview with the hiring manager. Simple exercise based on Docker. I would say it was not too hard. Anyone with the Docker knowledge would be able to pass.

Had my initial screening interview which went well. Moved to second stage with hiring manager interview, which didn't go my way because they were looking for an intermediate position. Overall experience was good

The interviewer was late to the meeting and also was disrespectful to me. I don't recommend you to interview there. There are plenty of other companies out there which are better than this one.