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Software Engineer

Company: Jane Street

Location: Hong Kong, London

Posted: June 19, 2026

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Position Details

About the Position


As a Software Engineering intern, you’ll learn how we use OCaml (our primary development language) in our day to day work, and gain exposure to the libraries and tools that are foundational to our internal systems. Some teams also use Python, so depending on the project, you might do some work with Python as well.


During the internship, you’ll be closely mentored by full-time software engineers. Mentors design intern projects based on their team’s current needs and are heavily invested in helping interns build maintainable, high-quality software that is intended to reach production. The work you will do is as varied and diverse as what full-timers work on, covering a wide range of problems, from high performance trading systems to programming language design and everything in between.


If you’d like to learn more, you can read about our and processes and get a sense of what our looked like!


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