First is phone interview in various quant topics (Lin alg, programming, stochastic, probability) and second is case study on some finance topic like option pricing or MC simulation, with presentation.
one round phone interview covering basic ordinary differential equation, probability, statistics, Monte Carlo;
one round on-site interview on basic stochastic calculus (solution to Ornstein-Uhlenbeck, derivation of B-S equation), programming problems in easy level leetcode
Interview questions [1]
Question 1
On programming, there is one problem with the usage of virtual function; there's also a buffon's needle problem
I applied through an employee referral. I interviewed at Wells Fargo in Feb 2021
Interview
One round of technical phone interview, and then got invited to complete a time-limited case study (derivative pricing exercise). Submitted powerpoint + written report + code (Python/C++/Java), and then presented case study results on "Super Day" technical interview round. Then, end with a round of behavioral interview.
Interview questions [1]
Question 1
How do you speed up the convergence of a Monte Carlo simulation? Do you know anything about C++ templates / Python @classmethod decorator / how to verify the properties of a pseudorandom generator?
Also, specific questions about choices and assumptions made in case study. Presentation lasted 10-12 minutes, but Q&A lasted four times as long.