Software Engineer at Jane Street
New York, NY
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Jul 5, 2026
New York, NY
Jul 21, 2026
What this job asks for AI summary
A co-op software engineering internship at a trading firm, where interns work on real production-bound projects mentored by full-time engineers. Day-to-day work is primarily in OCaml, with some Python depending on the project, and spans a broad range of problems including high-performance trading systems and programming language design. Candidates must be enrolled in a co-op program.
Junior level · New York-Newark-Jersey City, NY-NJ-PA · Internship
Posted 3 times — it's one opening, so apply once.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
Why we read it this way (6)
This is a co-op/internship role; the posting explicitly states candidates must be enrolled in a co-op program.
OCaml is described as Jane Street's primary development language and the core of what interns learn — treated as a hard requirement for this role.
Python is mentioned as a secondary possibility ('some teams also use Python… depending on the project') — it appears as contextual stack color rather than a gate.
Location is inferred as New York (Jane Street's primary office); the posting does not explicitly state a city but Jane Street is headquartered in NYC.
No compensation figures are provided in the posting.
Posting is for a internship engagement — the market benchmarks below price full-time roles, so read the comp comparison with that in mind.
Read the full posting
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