Caveat Configurator: how to replace configs with code, and why you might not want to
We have a new tech talk coming up on May 17th, from our very own Dominick LoBraico. This one is about how to represent configurations...
This is not the performance you were looking for: the tricks systems play on us
It’s often surprising just how much software performance depends on how the software is deployed. All the time and effort you’ve invested in optimization can...
By: Andy Myers
Trivial meta-programming with cinaps
From now and then, I found myself having to write some mechanical and repetitive code. The usual solution for this is to write a code...
By: Jeremie Dimino
One more talk, two more videos
I’m happy to announce our next public tech talk, called Seven Implementations of Incremental, on Wednesday, April 5th, presented by yours truly. You can register...
By: Yaron Minsky
What a Jane Street software engineering interview is like
Are you thinking about applying to Jane Street for a software engineering role? Or already have a phone interview scheduled but unsure what to expect?...
By: Sebastian Funk
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Jane Street Tech Talks: Verifying Puppet Configs
Our first Jane Street Tech Talk went really well! Thanks to everyone who came and made it a fun event.
By: Yaron Minsky
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How to Build an Exchange
UPDATE: We are full up. Tons of people signed up for the talk, and we’re now at the limit of what we feel like we...
By: Yaron Minsky
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A brief trip through Spacetime
Spacetime is a new memory profiling facility for OCaml to help find space leaks and unwanted allocations. Whilst still a little rough around the edges,...
By: Leo White
A solution to the ppx versioning problem
Ppx is a preprocessing system for OCaml where one maps over the OCaml abstract syntax tree (AST) to interpret some special syntax fragments to generate...
By: Jeremie Dimino
Observations of a functional programmer
I was recently invited to do the keynote at the Commercial Users of Functional Programming workshop, a 15-year-old gathering which is attached to ICFP, the...
By: Yaron Minsky
What the interns have wrought, 2016
Now that the interns have mostly gone back to school, it’s a good time to look back at what they did while they were here....
By: Yaron Minsky
Unraveling of the tech hiring market
Recruiting talented people has always been challenging.
By: David Powers
Do you love dev tools? Come work at Jane Street.
In the last few years, we’ve spent more and more effort working on developer tools, to the point where we now have a tools-and-compilers group...
By: Yaron Minsky
Let syntax, and why you should use it
Earlier this year, we created a ppx_let, a PPX rewriter that introduces a syntax for working with monadic and applicative libraries like Command, Async, Result...
By: Yaron Minsky
ppx_core: context-free rewriters for better semantics and faster compilation
At Jane Street, we have always been heavy users of pre-processors, first with camlp4 and now ppx. Pre-processing makes the infrastructure a bit more complex,...
By: Jeremie Dimino
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Seven Implementations of Incremental
We finally got a decent recording of one of my favorite talks. This one is about our Incremental library (which I wrote about here), and...
By: Yaron Minsky
OCaml 4.03: Everything else
In my previous post I wrote about Flambda, which is the single biggest feature coming to OCaml in this release. In this post, I’ll review...
By: Yaron Minsky
A better inliner for OCaml, and why it matters
OCaml 4.03 is branched and a first release candidate is imminent, so it seems like a good time to take stock of what’s coming.
By: Yaron Minsky
