About the Position
Python is a vital part of Jane Street’s research and trading work, acting as the go-to language for data analysis, visualization, and machine learning. Our Python developer tools team is responsible for the tools that support our work in Python, including:
- CI for running tests and static analysis
- Automation around the deployment of Python environments and applications
- Libraries for building hybrid Python/OCaml systems
We’re looking for engineers with experience building Python tooling at large scale who want to leverage those skills in a new environment.
The job is wide-ranging, involving both technical and product design challenges — from finding ways to speed up our static analysis and test harnesses to working with users to understand their workflows and requirements and designing solutions that fit their needs.
We’re also looking for someone who can contribute to guiding our relatively young Python ecosystem, helping us form and communicate best practices, and make good choices about the tools and libraries we use.
Lots of our automation and Python tooling is written in OCaml, but we’re happy to teach you that, and we don’t expect any previous experience with OCaml or any other functional programming language.
If you're a recruiting agency and want to partner with us, please reach out to [email protected].
Top Skills
What We Do
Jane Street works differently. As a liquidity provider and market maker, we trade on more than 200 trading venues across 45 countries and help form the backbone of global markets. Our approach is rooted in technology and rigorous quantitative analysis, but our success is driven by our people.
Our bright, beautiful offices in the heart of New York, London, Hong Kong, and Amsterdam are open and buzzing with conversation. We come from many backgrounds and encourage travel between offices to share perspectives. Some of our best ideas come from bumping into a visiting colleague at the office coffee bar.
Markets move fast. Staying competitive as we’ve grown has required constant invention—of new trading strategies, technology, and processes. We’ve found this is easier when you hire humble, kind people. They tend to help each other, and prioritize teamwork over titles.
We invest heavily in teaching and training. There’s a library and a classroom in every office, because deepening your understanding of something is considered real work. Guest lectures, classes, and conferences round out the intellectual exchanges that happen every day.
People grow into long careers at Jane Street because there are always new and interesting problems to solve, systems to build, and theories to test. More than twenty years after our founding, it still feels like we’re just getting started.
