They sent me a CodeSignal quiz. I took the quiz, which was four algorithmic programming questions (none of which were relevant to the job based on the job description). Your score is automatically generated and shown to you once you finish the exam. I got perfect scores on the first three questions. The fourth question my code did what it was supposed to do, but was too slow so about half the tests timed out. I thought overall I'd done well, but apparently Quora thinks frontend developers need to be gods of algorithms, because they rejected me soon after I submitted the quiz.