Yaron Minsky said in one of his talks that hiring OCaml programmers was the easiest thing in the world: he posted an ad on the mailing list, got 20 applications, 15 of which were worthy of a phone interview. Of those 15, 5 were asked to come in for an in-person interview and 3 of those were hired.
Sure, he might not be able to hire 80 programmers in one batch, but I don't think Jane Street would need to do that, or that they are worried about a shortage of OCaml programmers. Also, I would be more confident of the capabilities of an OCaml programmer than of a PHP programmer.
Sure, he might not be able to hire 80 programmers in one batch, but I don't think Jane Street would need to do that, or that they are worried about a shortage of OCaml programmers. Also, I would be more confident of the capabilities of an OCaml programmer than of a PHP programmer.