Went through a technical screening then moved on to the final interview process consisting of 4 rounds (2 coding, 1 behavioral, and 1 system design and domain knowledge). Up until technical questions and 2 coding questions, interview experience was great. Interviewing willing to work with you and have conversations while explaining and getting to the solution. But the interviewer for my last system design interview. The worst interviewer I have ever had in my entire career (~6 years). As soon as the interview starts, just throws question at me and sitting there doing something else whole time. At this point wasn't even sure if he was paying attention at all. No feedback. Stopping me all the time, calling me out wrong every single time. I almost asked if I was offending him somehow someway during the interview. DoorDash, Please make sure to pick your interviewers more carefully.