The first interview is on data manipulation, EDA, and modeling. Know your stats and data familiarity in constructing models also handing unstructure data in ux system. The interview is roughly 1 and a half hours.
I applied online. I interviewed at Voleon (New York, NY)
Interview
They will give you an interview prep guide. First round is regression and bash commands. Second is pandas data manipulation with finance terms. Last round is data insights and a behavioral.
Interview questions [1]
Question 1
How to find a signal from regression. Calculate weighted averages.
data manipulation live coding problems with py pandas, etc. do not remember much, but I think I did not get the interviewer satisfied with the stuff i created, but not sure what they want. not much instruction