I applied online. The process took 5 days. I interviewed at AKUNA CAPITAL in Sept 2018
Interview
I applied and got a Hackerrank challenge in 2-3 days. They gave me two weeks to do a single Python coding challenge. The challenge itself was a bit dense and took quite a bit to understand.
Focused mostly on the sort of questions which one might have already encountered during their algorithmic review process preparing for the interview. Initial screen was done on a secure testing site and included a variety of different questions about many topics.
I applied online. The process took 1 week. I interviewed at AKUNA CAPITAL (Chicago, IL) in Jan 2016
Interview
Applied online with a resume drop (no cover letter) and heard back in two days. Took an hour-long 12 question exam on hackerrank -- 9 coding and 3 logic. If you passed freshman CS you could pass this exam. Basic pointers, loops, searching, and baby algorithms. Waiting to hear back for subsequent rounds.