I applied through an employee referral. I interviewed at Quadrature (London, England) in Mar 2019
Interview
I was referred via internal referral. Got online task for home, which was pretty interesting and quite difficult. Then got 3 onsite interviews during one day, 1h each. Then another day 2 interviews with directors. All 5 were technical.
The whole interview experience, both the technical side (lousy phone connection that was breaking up constantly) and the content was rather poor and amateurish. As a technical candidate, I felt I was being interviewed by somebody with an arts/business degree, who only learned a few buzzwords (open source, linux, python, etc). As a result, they ended up going over "How to interview a candidate" manual from the nineties, asking questions along the lines of "how do you resolve conflict situations in the workplace", "what are your main weaknesses". But the most ludicrous were questions about engineering aptitude al a "when did you start coding", "what was your first coding language". Really!? I mean, if you have a TC with a PhD in CS and years of experience at FAANGs, what signal can these questions possibly send? What a waste of time!
The other interesting aspect was that the interviewer claimed that people from large tech companies would want to join them because of the company culture, but when pressed for the company mission, couldn't produce anything better than "bigger, stronger, faster".... nuff said.
I only made it to the first stage. It was a telephone interview where questions were fairly generic. Keep in mind to always remember why you want to work at Quadrature.