There is no interview, just an online assessment to test your coding ability. I applied for the technology stream. Results are out after a couple of weeks. Also form to filled in.
OA + 1 round of interview. Basic probabilities about flipping coins. The last two questions in OA are quite open, asking you the idea of estimating something based on some given information.
I applied online. I interviewed at Jane Street in Apr 2017
Interview
It's not a traditional interview, but more they ask you to solve a puzzle using any method. I first applied online, then they contacted me again that I moved onto the next step in the application process.
Interview questions [1]
Question 1
To solve a puzzle that involved allocating resources to 10 different districts.