I applied through a recruiter. The process took 1 day. I interviewed at Quantlab (Chicago, IL) in Aug 2018
Interview
The recruiter called them and they replied with a simple c++ test. After the test they asked if i wanted feedback, which i said yes to, but i never received any .
Interview questions [1]
Question 1
They sent a simplistic question about parsing streaming trade data and doing very simplistic calculations on it.