I applied through a staffing agency. The process took 4 weeks. I interviewed at PEAK6 (Chicago, IL) in Feb 2022
Interview
1st step was an online assessment, it was a twist on one of the questions other people have mentioned.
Then a video interview going over my past experiences and more basic technical questions.
Finally, a virtual on-site consisting of 5 interview: 1 coding, 1 system design, 1 technical (not coding), and the rest being behavioral/fit interviews. The coding round was based on a practical problem within the trading space.
Overall, everyone I talked to was very nice and seemed to love working for PEAK6.
Interview questions [1]
Question 1
Q: Typical behavioral questions
Q: Technical questions about programming languages you are experienced with, api development, etc
I applied through a recruiter. The process took 1 week. I interviewed at PEAK6 (Budapest) in Apr 2026
Interview
There are many rounds, I completed the coding homework and then they gosted me
HR interview - about 10-20 minutes
Manager Interview (local office) - 30 minutes, basic introductions and motivations;
Coding homework (Hackerrank) - 1.5 hours;
------ next stages were only described to me, because after I sent back the homework, they never contacted me, even though I cleared all the tests and finished in 50 minutes instead of 90 minutes. ------
Manager interview - global side - about 30 minutes;
offline interview afternoon in the office, which contains: coding again in front of others for 1.5 hours, 30 minutes design test, and other manager interview for 30 minutes
Had an initial call with a director , discussed some high level tech and experience, second stage was live coding challenge where you shared your screen and worked through a problem
Interview questions [1]
Question 1
questions on bits of tech that i had used, coding challenge didnt go as well as i expected
I applied online. The process took 2 months. I interviewed at PEAK6 in Sep 2022
Interview
Online assessment, 2 round phone interview, then 4 hour final round all virtual. OA was relatively difficult. Phone interview and final round were both technical and behavioral. Scheduling the interviews was frustrating and required several emails, and the entire process took almost 2 months.