I applied through college or university. The process took 1 day. I interviewed at FlexTrade Systems Inc. (Kharagpur, West Bengal) in Dec 2012
Interview
Had a IQ MCQ test, followed by 2 rounds of face-to-face.
This was a campus recruitment. MCQ aptitude paper was pretty easy. CS paper had a lot of questions on Java/C++ which I had forgotten though. Had 2 programming questions.
Interview questions [1]
Question 1
1. Divide gold bar to pay servant each day of a week in equal shares, with making minimum number of cuts.
2. Cut a cake into 8 equal parts with 3 cuts
I interviewed at FlexTrade Systems Inc. (Milwaukee, WI)
Interview
Exam was very difficult. The hackerank does not allow you to use any outside resources and I was unable to recall syntax for functional programming which was listed as a small requirement on the application.
I interviewed at FlexTrade Systems Inc. (London, England) in May 2026
Interview
First took me through an intro call, which was simple enough explaining my career from start to finish. I'm a junior dev, so I focused mainly on my one previously role, talked about arch, day to day and core language uses and application.
Recieved a private LeetCode link to complete within 7 days, was told 2 hours to complete but the LeetCode timer was set to 3 hours.
Passed 4/5 test cases, took 2h27 to submit the single question. Did a bit of digging after submitting - found this specific problem was not public. Really enjoyed the challenge, but my code must not have been flexible enough (that fifth test case failing caught me so bad and I couldn't get my head round it annoyingly - big fluster). Did not receive next round invite.
I applied online. The process took 2 weeks. I interviewed at FlexTrade Systems Inc. (London, England) in Nov 2025
Interview
Had a quick call with HR about the process, then sent a HackerRank (which could only be done in Java) easy(ish) lc. Then a half an hour behavioural interview with a senior engineer, before on-site which was 2 hours or so, another simple Java problem on the whiteboard, a simple math/data structure problem, and then general behavioural and team experience questions, from engineers on the team and then with the team lead. Rejected a couple days later, said other candidates were a better fit.
Interview questions [1]
Question 1
Do you like working in a small team? Have you ever done a project where you've owned the whole stack end-to-end? What's your process for debugging something? Tell me a time you had to manage conflict.