Take some automated coding challenge (most despicable since it burns none of their time so they can pit you against 10,000 college kids who train for this sort of stuff). Online whiteboard interviews otherwise, a little bit better since there's a guy on their side wasting his time too, hardly paying attention among sounds of keyboard clicking and talking with other guys in the office. And give you the sort of relevant problems that you face as a quant dev, like finding find how many permutations do you need to make a word an anagram of the other or count all palindrome sub-strings in a string. And if you don't do it fast enough as having seen the problem before but not looking like you seen it before, you're disqualified. And even if you actually solve it in the half an hour to an hour that you have but you haven't solved it *optimally* as the well-rested guys with lots of time to burn on stupid problems have eventually come upon after months of mingling and tweaking, then you're also disqualified.