RejectedTechnical Screen

Positive Crawler Feedback, Then Rejection the Next Day

MongoDBSoftware Engineer · Technical Screen · Aug 2026

I have no idea why I failed this interview. I finished both the original question and the follow-up, and the interviewer said both my approach and code looked good. Then I was told the next day that I'd been rejected. Question: Implement: Single-threaded first → Follow-up = find the bottleneck + speed it up with concurrency (= LC 1242 Web Crawler Multithreaded) The interviewer explicitly said the…

Shared by a candidate · reported Aug 2026. Interview formats change; use it as a guide, not a script.