msmoriarty writes: With the interest/discussion on our highest-paid programmers article, our reporter decided to do a follow-up looking into the languages and skills needed to work on high-frequency trading (HFT) systems. There's actually a pretty wide range of languages/tools used, but Linux is the "default" OS and, not surprisingly, the "ability to work under pressure when the traders are screaming at you" is a must-have skill.
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