I recently went through the DoorDash interview process. Sharing my experience here:

Round 1: System Design + Domain Knowledge

• Problem was around an Ads Click Aggregator.

• Interviewer was from the Data Engineering team. Personally, I felt the conversation was difficult because:

  • The interviewer seemed relatively inexperienced in running such interviews. In design rounds, the flow of discussion and how the interviewer guides you matters a lot.

  • The focus was on areas that I did not find core to the problem, which made it tricky to showcase system design skills properly.

Round 2: Hiring Manager Discussion

• Standard behavioral questions. Straightforward round.

Round 3: Debugging

• Given a piece of code with 3–4 bugs. Fixed them.

• Interviewer then asked follow-up questions on optimizations, which I was able to address.

Round 4: Code Craft

• I expected this round to evaluate OOP principles, class creation, and code structure.

• Instead, the interviewer was only concerned with the problem-solving logic and wanted a running code.

Result: Rejected.

Overall, I left unsatisfied with the interview process, mainly because of the lack of alignment in expectations and the way some interviews were conducted.