What the interns have wrought, 2023 edition
We’re once again at the end of our internship season, and it’s my task to provide a few highlights of what the dev interns accomplished...
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Oxidizing OCaml: Data Race Freedom
OCaml with Jane Street extensions is available from our public opam repo. Only a slice of the features described in this series are currently implemented....
By: Max Slater
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We're sponsoring SoME3
Jane Street is excited to announce our sponsorship of SoME3, Grant Sanderson and James Schloss’s third Summer of Math Exposition. SoME is a contest that...
By: Craig Falls
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Oxidizing OCaml: Rust-Style Ownership
OCaml with Jane Street extensions is available from our public opam repo. Only a slice of the features described in this series are currently implemented....
By: Max Slater
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Oxidizing OCaml: Locality
OCaml with Jane Street extensions is available from our public opam repo. Only a slice of the features described in this series are currently implemented....
By: Max Slater
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Building reproducible Python environments with XARs
Our traders and researchers love Python for its agility and for its huge open-source ecosystem, especially when it comes to machine learning. But the heavy...
By: Pavel Senchanka
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What if writing tests was a joyful experience?
At Jane Street we use a pattern/library called “expect tests” that makes test-writing feel like a REPL session, or like exploratory programming in a Jupyter...
By: James Somers
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Accelerating zk-SNARKs - MSM and NTT algorithms on FPGAs with Hardcaml
In 2022 a consortium of companies ran an international competition, called the ZPrize, to advance the state of the art in “zero-knowledge” cryptography. We decided...
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Visualizing information propagation in markets
The Dojima rice market, established around 1716, is widely considered to be the world’s first organized futures exchange. Instead of directly exchanging money for rice...
By: Ricson Cheng
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Computations that differentiate, debug, and document themselves
One of the problems we wrestle with at Jane Street is how to understand and manage the costs associated with the positions we hold: things...
By: Aditya Srinivasan
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Introducing the Jane Street Graduate Research Fellowship
We are excited to announce the launch of the Jane Street Graduate Research Fellowship!
By: Emily Berger
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What the interns have wrought, 2022 edition
We’re once again at the end of our internship season, and it’s my task to provide a few highlights of what the interns accomplished while...
By: Yaron Minsky
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Research internships in our Tools and Compilers group
We are excited to announce research internships in our Tools and Compilers group.
By: Greta Yorsh
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How Jane Street Pairs Interns to Projects and Teams During the Software Engineering Internship
Software engineering intern candidates often ask how team placement works and how much input incoming interns have over their teams and projects. We know team...
By: Sydney Mitchell
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Magic-trace: Diagnosing tricky performance issues easily with Intel Processor Trace
Intel Processor Trace is a hardware technology that can record all program execution flow along with timing information accurate to around 30ns. As far as...
By: Tristan Hume
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Hiring a Developer Educator
We spend a lot of time on education at Jane Street. Like, really a lot.
By: Yaron Minsky
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Goodbye Core_kernel
We recently restructured our standard libraries at Jane Street in a way that eliminates the difference between Core_kernel and Core and we’re happy with the...
By: Jeremie Dimino
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What the interns have wrought, 2021 edition
It’s the end of another dev internship season, and this one marked something of a transition, since halfway through the season, NY-based interns were invited...
By: Yaron Minsky
