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# Programming Language Engineer

- **Company:** Jane
- **Location:** New York, United States
- **Contract:** Permanent contract
- **Skills:** Compilers, Profiling, Computer Programming, Software Debugging, Hardware Design, Python (Programming Language), Open Source Technology, Software Engineering, Systems Integration, Type Systems, Graphics Processing Unit (GPU), Documentation System, Functional Programming, Programming Languages
- **Published:** September 4, 2026
- **Apply:** https://startup.jobs/programming-language-engineer-jane-street-8313078

## About the Role

* Deep experience with-and love for-programming languages. There's no specific checklist; we are interested in people with experience in language design, type systems, compilers, runtimes, or DSL implementation
 * Top-notch programming skills
 * Strong interpersonal skills. Software engineering at Jane Street is highly collaborative, and we are looking for people who can work effectively in small, close-knit teams

No previous experience with OCaml or functional programming is required.

## Description

* Support for high-performance computing, including work on tooling, verification techniques, and languages for hardware design, as well as support for programming GPUs and other ML accelerators.
 * Domain-specific languages. Designing, implementing, and evolving custom languages that power some of our most important internal platforms.
 * Tooling and developer experience. Profilers, debuggers, language servers, IDE integrations, documentation tools, and the surrounding infrastructure that makes a language genuinely pleasant to use at scale.

Some of this work involves working on open-source language implementations, like those of OCaml and Python, and for those areas, a meaningful portion of our work is open-source as well. Some of it involves custom languages and DSLs that we've built entirely in-house, some open-source, some purely internal.


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