Microarchitecture: What Happens Beneath

How Language Models Model Programming Languages and How Programmers Model Language Models

Making GPUs Actually Fast: A Deep Dive into Training Performance

Pyrefly: Type Checking 1.8 Million Lines of Python Per Second

Hacking OCaml

Why ML Needs a New Programming Language with Chris Lattner

Rust for Everyone!

The Thermodynamics of Trading with Daniel Pontecorvo

The Saga of Multicore OCaml

What to Expect When Applying for a Jane Street Internship

Insights About the Strategy and Product Team at Jane Street

Jane Street Internship 2025: Projects, Mentorship, and Learning

Building Tools for Traders with Ian Henry

What Makes the Accounting Department at Jane Street Unique

Making OCaml Safe for Performance Engineering

Finding Signal in the Noise: Machine Learning and the Markets with In Young Cho

How OCaml Represents Values in Memory

Building Machine Learning Systems for a Trillion Trillion Floating Point Operations

Meet the Machine Learning Team at Jane Street

System Jitter and Where to Find It: A Whack-a-Mole Experience

uv: An Extremely Fast Python Package Manager

An Overview of the Jane Street Internship Program 2024

The Uncertain Art of Accelerating ML Models with Sylvain Gugger

Solving Puzzles in Production with Liora Friedberg

How to Use OCaml's Coercion Operator

An Inside Look at Jane Street's Hong Kong Internship Program 2024

Unfolding the Mystery of Curved-Crease Sculpture with Origami Theorists from MIT

OCaml's New Proposed "include functor" Syntax | OCaml Unboxed

An Introduction to the Creative Engagement Department at Jane Street

Get to Know Us: Rory Talks Production Engineering at Jane Street

How to Play Figgie | Jane Street Card Game Tutorial

Get to Know Us: Matt Talks Machine Learning at Jane Street

Get to Know Us: JP Talks Machine Learning at Jane Street

From the Lab to the Trading Floor: Designing for Expert Users with Erin Murphy

Programming with OCaml's Local Mode | OCaml Unboxed

Regions with OCaml's Local Types | OCaml Unboxed

Get to Know Us: Declan Talks Research at Jane Street

Get to Know Us: Alok talks Research at Jane Street

Exploring the Hidden Secrets within OCaml’s Local Function Types | OCaml Unboxed

Pitfalls with Tail Calls and Locals in OCaml | OCaml Unboxed

OCaml Unboxed: An Exploration of Jane Street's Experiments with OCaml

Stack Allocation with Locals in OCaml | OCaml Unboxed

OCaml Locals Save Allocations | OCaml Unboxed

Inferring Locality in OCaml | OCaml Unboxed

Understanding OCaml Locals as a Mode (with Sub-Moding) | OCaml Unboxed

Annotating OCaml Variables and Returns with local_ | OCaml Unboxed

Introducing the OCaml Local Mode | OCaml Unboxed

Performance Engineering on Hard Mode with Andrew Hunter

A Poet's Guide to Product Management with Peter Bogart-Johnson

Get to Know Us: Sean Talks Hospitality at Jane Street

Get to Know Us: Dan Talks Trading Desk Operations at Jane Street

Get to Know Us: Varun Talks Software Engineering at Jane Street

Get to Know Us: Jason Talks Operations at Jane Street

Get to Know Us: Jorge Talks Hospitality at Jane Street

Get to Know Us: Nitya Talks Trading at Jane Street

FAQ: Applying and Interviewing at Jane Street

Get to Know Us: Nicole Talks Trading at Jane Street

Get to Know Us: Ian Talks Software Engineering at Jane Street

Get to Know Us: Rachel Talks Trading Desk Operations at Jane Street

Get to Know Us: Ezio Talks Linux Engineering at Jane Street