After applying, received an email to register with CodeSignal and take a General Assessment. Completed said assessment the next day, and the day after that, I received an email saying, "The team has reviewed the results of your submission, and unfortunately, we will not be able to move forward with your application." Now, this assessment was actually easier than some of the tasks I actually worked on in this exact field for more than a year and a half, so I don't feel I did poorly on it; I'll keep thinking this way so long as there is no assessment score on CodeSignal itself. It's kind of weird to say they've reviewed results of a submission when no assessment results are given. I don't think I'd be writing this if the score was there, or with more transparency in general. There must have been no nuance, give, or flexibility in the answers (which is not an especially efficient way to fix/train AI)...or some other issue...but it's hard to say, since there are no pending results/no score available for that assessment, and no other explanation. Maybe it's for the best.