Software Engineer

Jane Street

New York, NY

On-siteCareer-pivot friendly

Who this role is best for

Best suited to intellectually curious programmers comfortable with OCaml or Python in a finance-adjacent mentorship-driven environment.

Best fit for

Interns who thrive under close mentorship while tackling production-bound projects.
— “closely mentored by full-time software engineers”
Candidates with academic grounding seeking real-world OCaml application.
— “learn how we use OCaml (our primary development language)”
Problem-solvers unafraid to ask questions in collaborative settings.
— “humble and unafraid to ask questions and admit mistakes”

Things to consider

Current enrollment in a co-op program is mandatory.
— “Must be enrolled in a co-op program”
Project assignments depend on team needs, limiting technology choice control.
— “depending on the project, you might do some work with Python”

How to stand out

Demonstrate curiosity through side projects involving OCaml or Python.
— “a curious mind, a collaborative spirit, and a passion for solving interesting problems”
Highlight prior mentorship experiences or collaborative coding environments.
— “collaborating with you on real-world projects we actually need done”
Prepare to discuss mistakes openly during interviews.
— “unafraid to ask questions and admit mistakes”

Pace · SteadyCollaboration · HighAutonomy · MediumDecision Impact · IndividualLevel · Intern

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

successful project completion
code quality
mentorship

Typical background

computer scienceengineering

Skills & requirements

Required

OcamlProgrammingProblem-solvingCollaboration

Preferred

PythonHigh-performance SystemsProgramming Language Design

About the role

Original posting from Jane Street via Greenhouse

About the Position
Our goal is to give you a real sense of what it's like to work at Jane Street full time while also providing a truly unparalleled educational experience. As an intern, you are paired with full-time employees who act as mentors, collaborating with you on real-world projects we actually need done.
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 projects you will work on are as varied and diverse as those 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 interview and team placement processes and get a sense of what our most recent intern projects looked like!
About You
If you’ve never thought about a career in finance, you’re in good company. Many of us were in the same position before working here. If you have a curious mind, a collaborative spirit, and a passion for solving interesting problems, we have a feeling you’ll fit right in. You should be:
A top-notch programmer with a love for technology
Intellectually curious, collaborative, and eager to learn
Humble and unafraid to ask questions and admit mistakes
Must be enrolled in a co-op program

Source: Jane Street careers (Greenhouse)