Two Sigma Quantitative Researcher interview experience

I was invited to a first-round interview focused on data analysis, followed by a sequence that ultimately reached a final stage with multiple technical rounds. The difficulty felt high enough that it didn’t seem like a typical “can you code” screen—there was a lot of emphasis on being thorough about analysis and statistics.

At the online stage, I ran into three coding problems that looked like day-to-day data work: things like building a linear interpolator, doing linear regression of daily temperature by town, and efficiently fitting a linear regression. After that, the technical interviews