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User-h0uslJun 28, 2026

HRT Algo Dev phone screen - Rejected

Interview Experiences
hudson river trading
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Replies (4)

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ray.xuJun 28, 2026

How long did the whole process take? OA to phone screen?

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kevinliangJun 29, 2026

About 3 weeks from OA to this round. Got the rejection email same day after the call.

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User-2xxr8Jun 28, 2026

Had the same problem a few months back. The continuous followup is where most people fall apart. Did you at least talk through the segment-based approach before time ran out?

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priya.sharmaJun 28, 2026

Can you share more about the watcher reversal logic? Were the timestamps sorted or unsorted when given?

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kevinliangJun 29, 2026

Timestamps were unsorted, had to sort them first. I mentioned segmenting by reversal intervals for the continuous version but never got to code it. Interviewer seemed okay with the verbal explanation but I think running out of time hurt.

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User-qm8i6Jun 28, 2026

HRT problems are brutal for implementation under time pressure. 30 min is not enough for edge cases on top of simulation. Sorry it didn't work out.

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