I applied online. I interviewed at FlexTrade Systems Inc. in Feb 2020
Interview
Applied online, within a week received an email for hackerrank coding challenge. A week after that HR call with the lead recruiter was set. I talked to him about the role and the further process.
I was scheduled for an hr interview with the lead software developer while the call ended in less than 1/2 hr. Not quite sure who was misinformed here. Ever since then I was just ghosted by this company. No mails what so ever, tried calling the recruiter no one answers the phone.
Why even take a person till third round when you only aim at ghosting the candidate?
Have the courtesy to at least send a rejection mail. This behavior talks a lot about companies' culture too!
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.