I applied online. I interviewed at Hudson River Trading
Interview
Online coding assessment on codesignal, 3 questions in your preferred language over 150 mins. They don't mind when you complete the assessment, but hire on a rolling basis. Questions aren't too complicated but have a time test to check for efficiency
Interview questions [1]
Question 1
Given an integer n, return the number of integers less than n that can be express in base 4 as only 1s and 0s
I interviewed at Hudson River Trading (New York, NY)
Interview
Rejected after two virtual rounds. Probability, statistics, and coding questions. Leetcode medium-type questions. No questions about resume. Relatively short interviews (45 mins). Interviewers were nice.
Responded back to me very quickly. Rejected next day after last interview.
I applied through an employee referral. The process took 2 weeks. I interviewed at Hudson River Trading (New York, NY) in July 2025
Interview
OA + 2 rounds + final round. OA is coding. 2 rounds are coding + statistics + probability. final round covers mix of things including coding, data analysis, etc. Both technical and behavioral/prev experience parts to rounds with technical being more emphasized.