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As Jane Street grows, the quality of the development tools we usematters more and more. We increasingly work on the OCaml compileritself: adding useful lang...

It’s time for our nextJane Street Tech Talk. Whenwe’ve solicited suggestions for topics, one common request has been totalk about our internal development pr...

OCaml 4.06 has, by default, immutable strings. This necessitates some changes to "More OCaml" ("OCaml from the Very Beginning" is unaffected). The paper and kindle books (on Amazon), as well as the PDF e-book here, have been updated, together with the online resources. 

After a summer hiatus, the Jane Street Tech Talks series is back onfor the fall! Last we left it, our very own Dominick LoBraicopresented on the evolution of...

Trading is a competitive business. You need great people and greattechnology, of course, but also trading strategies that make money.Where do those strategie...

For those of you interested in whatwhatinternsdo at Jane Street, here’s apost from former internTristan Hume, on his work developing tree-diffing algorithms ...

Jane Street is looking to hire an engineer with experience in bothsoftware and hardware design to work on FPGA-based applications, andon tools for creating s...

Transpose If we are to represent a row of a matrix as a list of numbers, then a matrix can naturally be re...

There are abundant resources online trying to scare programmers away from usingshell scripts. Most of them, if anything, succeed in convincing the reader tob...

Update: I’m excited to say that we’ve now hired a (great!) technicalwriter, so the position is closed.