I applied through college or university. I interviewed at Two Sigma (New York, NY)
Interview
Basic probability questions (e.g. the 2 envelope puzzle) as well as more complicated stuff (e.g. deriving the MLE for linear models).
There were a bunch of folks in the final round from various teams that came in & interviewed me. They can also cut the interview day short if they don't think you're gonna be a fit (which I thought was harsh, but very much understandable).
Applied online and received the online assessment about two weeks later. After that, I was invited to the first-round interview focused on data analysis. I reached the final stage, which consisted of three rounds, but did not pass.
I applied online. The process took 4 weeks. I interviewed at Two Sigma (New York, NY) in Dec 2024
Interview
Same OA as last years. Nailed all three, but didn't get any next step invitation. Last year the interviewer was late for 20 min, not respectful during the interview, and intentionally gave out hard questions.
Started with a few background questions surrounding research projects, then jumped into technical questions about probability and correlation matrices. The question involved statistics and linear algebra knowledge. Couldn’t answer one question then switched to another