Great article, one I wait for yearly. Relatedly - how do others deal with being objectively inferior, in basically every way, to the types of people that work at Jane Street? It always irks me that they end each of these articles with a recruiting pitch, as if most of us would ever be good enough to even get an interview, much less get an offer.
These are young interns too. If you’re a senior dev, after a few months of learning OCaml and the popular open-source Jane Street libraries, you maybecould implement any one of these projects.