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I am pleased to announce that we have recently released a slew of newHardcaml libraries!

Jane Street is running a Kaggle contest based on a real problem withreal financial data. If you like ML projects, or think you might,head over and check itou...

Memory issues can be hard to track down. A function that onlyallocates a few small objects can cause a space leak if it’s calledoften enough and those object...

Since version 4.10, OCaml offers a new best-fit memory allocatoralongside its existing default, the next-fit allocator. At JaneStreet, we’ve seen a big impro...

I’m excited (and slightly terrified) to announce that Jane Street isreleasing a new podcast, called Signals andThreads, and I’m going to be thehost.

It’s been an unusual internship season.

We’re busy preparing for our software engineering fall hiringseason. Over the years we’vedone our best to make our interview process more transparent tocandi...

At Jane Street, we have some experience using FPGAs for low-latencysystems–FPGAs are programmable hardware where you get the speed of anapplication-specific ...

At Jane Street, an “expecttest” is atest where you don’t manually write the output you’d like to checkyour code against – instead, this output is captured au...

Web browsers have supported customplug-ins andextensions sincethe 1990s, giving users the ability to add their own features andtools for improving workflow o...