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Level: Senior-Level
Round: Phone Screen · Type: Multiple Types · Difficulty: 7/10 · Duration: 120 min · Interviewer: Unfriendly
Topics: System Design, Behavioral Questions, Fraud Detection, Recommender Systems, Ranking Systems, Cold Start, Imbalanced Data
Location: Mountain View, CA
Interview date: 2025-12-31
Got offer: False
Question: Design a fraud detection system, including consideration of cold start and imbalanced data.
Question: Questions about conflict, failures, and pride in projects.
The first interviewer didn't introduce themselves but asked me to introduce myself. Then they asked me to design a fraud detection system. This included questions about cold start and imbalanced data. The recruiter said this role focuses on recommender systems, so I was surprised by the question. I later learned from HR that it was from their ranking system question bank.
The second round consisted of standard behavioral questions about conflict, failures, and achievements.