I stopped the application process because of the last question... " Write some code, that will flatten an array of arbitrarily nested arrays of integers...."
I'm not affiliated in any way with the grand-parent company but IMO this fizzbuzz is a fair exercise for the position of "Experienced Software Engineer" and that'll get your application reviewed by a real person.
It's a big turn off. The task is implemented in countless libraries. Are we not supposed to copy? If we are supposed to copy then I don't like playing games like that.
