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user@intervues:~/experiences/…$
Level: Mid-Level
Round: Full Journey · Type: Multiple Types · Difficulty: 4/10 · Duration: 180 min · Interviewer: Friendly
Topics: Behavioral, Machine Learning, Statistics, Case Study, Fraud Detection, Estimation
Location: New York, NY, US
Interview date: 2022-12-15
The interviewer emailed me at 3 PM, asking if I was available before 6 PM. I replied at 3:30 PM, saying I was. However, I didn't hear back. The next day, they emailed again to schedule, and this time it worked, although they were still over 10 minutes late. I was asked about my project experience, and they described what their department does. It seemed like they didn't fully understand my projects, so they asked me to write a simple summary. They misspelled my name in both emails.
One interviewer, who was on time, focused on machine learning and statistics questions, especially regarding project details. The other interviewer was late and asked case study questions, primarily about my understanding of American Express and potential fraud detection features. I wasn't prepared for the Amex-specific questions, but I still passed.
I received a call informing me that I passed the second round and to schedule the third round for the next day at 11 AM. I was told that the first interviewer would contact me to discuss preparation. However, by 10 AM the next day, I hadn't heard from them. I contacted the person who called me, and they apologized and assigned a new colleague. At 10:55 AM (five minutes before the interview), I was informed that the colleague was unavailable. The interview started then.
The interviewer, a director, was punctual. Although it was supposed to be a behavioral interview, they started with machine learning fundamentals and project experience questions before transitioning to standard behavioral questions:
The final question caught me off guard: "Estimate the total number of cars in XX country." I initially thought they meant "cards" and confirmed it was cars.