With so much money on the line, hedge funds and other trading firms focus a lot of effort on marketing and building up a perception that they truly are something special (at least those that take outside client money). Internally, things could be rather mundane, and even downright awful (from a technology perspective). Not commenting on Jane Street in particular, just the industry in general.
Source: I've worked at a hedge fund and I've seen how the sausage is truly made. Many friends have told me similar stories about other firms.
Source: I've worked at a hedge fund and I've seen how the sausage is truly made. Many friends have told me similar stories about other firms.