The math PhDs are for quants, sounds like you want to work as a dev. I think they still have very high standards for those, but it's probably quite similar over

The math PhDs are for quants, sounds like you want to work as a dev. I think they still have very high standards for those, but it's probably quite similar overall to getting a FAANG job. Depending on their strategy and stack they may have specific backgrounds that they look for for some roles, eg telecoms signal engineering, networking, maybe compilers or UNIX internals, but it's probably worth just giving it a shot with whatever your experience is. A finance background isn't required, they probably also won't care if you trade on your own. So I guess the advice is just practice some LeetCode. Since you asked about Jane Street, they're famous for using OCAML, so that'd be a good thing to look into if you want to demonstrate a desire to work for them specifically.