I went through a high-friction process with five rounds that tested breadth as well as depth. The subjects ranged across probability, puzzle-style questions, computer architecture, networks, and operating systems. Most prompts were open ended, with more emphasis on how I reasoned than on one correct answer.
The lack of a clear right path was mentally exhausting at times. I had to keep my logic organized because there were several possible approaches to each prompt. There was also live coding alongside statistics and math, plus a project context involving high-frequency trading and quote order-book data.
I did not receive an offer. My final impression was that they were assessing thinking quality across many domains at once. I put in serious effort, but the structure made clear that they wanted a specific problem-solving style: comfort with uncertainty and an ability to communicate reasoning under pressure.
Location: United States. Overall feedback: Positive. Offer status: no offer.
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