What is the Jane Street Internship?
The Jane Street internship is one of the most sought-after summer programmes in quantitative finance, period. The firm hires a small number of interns globally each summer - currently around 250 across all offices and tracks - from over 50,000 applications. Conversion to a full-time offer is unusually high (widely reported above 80%), and the internship is the dominant way Jane Street recruits its full-time graduate hires.
This guide covers the application timeline, the interview process specific to interns, intern compensation in London and New York, what interns actually work on, and what the return offer process looks like. For the broader interview content (the OCaml, the probability puzzles, the trading games), see our Jane Street interview guide.
The Internship Programmes
Jane Street offers internships across several tracks:
- Software Engineering Internship. The largest programme. Typically 10 to 12 weeks. Interns join an engineering team and ship real production code. OCaml is the firm's primary language; interns are not expected to know it before joining (Jane Street trains everyone in their first week).
- Trading Internship. Smaller and more selective. Interns rotate through trading desks, learning options market making, manual trading and the firm's specific risk frameworks.
- Quantitative Researcher Internship. Smaller still. Research-focused work on signal design, statistical modelling, and market microstructure.
- Discover Jane Street. A two-day workshop for first-year university students, used as a feeder into the formal internship programme. Highly competitive in its own right.
Application Timeline
Jane Street's recruiting cycle is one of the earliest in the industry. The pattern below is for the 2026 summer internship - dates shift slightly each year but the cadence is stable.
| Stage | Timing |
|---|---|
| Applications open | August (year before internship) |
| Online assessment | September to October |
| First-round interviews | October to November |
| Final-round Super Day | November to December |
| Offers extended | December to January |
| Internship begins | June (typically the first or second week) |
| Return offer decisions | August (last week of internship) |
For the 2027 summer internship, applications will open in August 2026. Apply early. The firm reviews applications on a rolling basis and the most desirable office locations fill up first.
The Interview Process
The interview process for the internship is largely the same as for the full-time graduate role - see our Jane Street interview guide for the full breakdown. The key differences:
-
Slightly less depth on prior experience. Internship candidates are not expected to have a track record of previous quant work. The interview content is similar but the bar on extracurricular signals (open source, competitive programming, prior internships) is lower.
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More emphasis on aptitude and learning curve. Jane Street is investing in training interns from scratch, so the firm screens hard for candidates who learn quickly and reason carefully under unfamiliar conditions.
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The Super Day is at a Jane Street office. The firm flies promising candidates to New York or London for the final round - this is partly an evaluation, partly a mutual sales pitch.
Intern Compensation
Jane Street is consistently the highest-paying internship in finance, and arguably in any industry.
| Office | Programme | Total summer compensation (2026) |
|---|---|---|
| New York | Software Engineering | $25,000 to $30,000 monthly stipend |
| New York | Trading | $25,000 to $30,000 monthly stipend |
| London | Software Engineering | £15,000 to £18,000 monthly stipend |
| Hong Kong | Software Engineering | HK$160,000 to HK$200,000 monthly stipend |
Add to that:
- Furnished housing provided at no cost in New York, London and Hong Kong
- Flights covered to and from the office for the start and end of the internship
- Daily lunch and dinner provided at the office
- Weekend events (escape rooms, day trips, professional poker tournaments)
The all-in package for a 10-week New York internship typically lands somewhere between $80,000 and $90,000 in cash, with another $15,000 to $20,000 of in-kind value (housing, flights, food). Most other top quant firms (Citadel, Two Sigma, HRT) are competitive on cash but do not match the in-kind benefits.
For broader internship comparison, see our quant jobs complete guide.
What Interns Actually Work On
Jane Street's internship is famously hands-on. Interns are not given makeup projects - they ship code or trade real money from week one. A few patterns:
Software Engineering Interns
- Join a specific team for the full internship (not a rotation)
- Onboard in the first week with a one-week OCaml bootcamp
- Receive a real project that ships to production within the 10-week window
- Past intern projects (from public Jane Street talks): performance optimisations to the trading engine, new tooling for the research workflow, data pipeline refactors, internal libraries used by the rest of the firm
Trading Interns
- Rotate through 2 to 3 trading desks across the summer
- Manual trading is often part of the rotation - interns are given small risk limits and trade real positions under supervision
- Daily structured learning sessions (covering options theory, market microstructure, the firm's specific risk frameworks)
- A capstone project at the end of the summer - typically a trading idea pitch to senior traders
Quantitative Researcher Interns
- Given a real research problem from a senior researcher
- Build, validate and present a model or signal
- Work within the same research infrastructure full-time researchers use
- Present findings at the end of the summer
The Return Offer Process
Jane Street's return offer rate is widely reported above 80%, which is unusually high for the industry (most top quant firms sit at 50 to 70%). The firm describes its philosophy as "we hire interns we expect to convert" - the bar at the internship interview stage is set high enough that most interns are expected to succeed.
The decision is made in the final two weeks of the internship, primarily based on:
- Manager feedback. What did you ship? What was its quality? How was your collaboration with the team?
- A formal end-of-internship review. Typically a 30-minute meeting with your manager and one or two senior people from the team.
- Feedback from people you worked with. Jane Street interviews several team members beyond your direct manager.
If you receive a return offer, you typically have until the end of the calendar year to accept. Compensation is the standard graduate package, which is currently among the highest in the industry - first-year graduates in New York typically receive $400,000 to $600,000 in total compensation; in London, £250,000 to £400,000.
For full-time salary detail, see our quantitative analyst salary guide.
How to Prepare
The interview content is the same as the full-time graduate process, so the preparation is the same. See our Jane Street interview guide for the six-week preparation plan, recommended reading, and practice problem categories.
A few internship-specific additions:
- Apply on day one of the cycle. Jane Street's recruiting is rolling. The earlier you apply, the more likely you are to get an interview slot.
- Practise the OA before applying. Past Jane Street OA questions are publicly available. Doing several timed practice OAs before submitting your formal application means your real OA will not be your first encounter with the format.
- For the Super Day, prepare specific questions. Jane Street's interviewers expect you to ask substantive questions back. Generic questions ("What is the culture like?") are evidence of low preparation. Specific questions ("How does the manual trading desk think about position sizing in low-vol regimes?") signal serious interest.
What Jane Street Looks For in Interns
Three traits separate Jane Street offers from rejections at the internship stage.
Calibration. Jane Street, like SIG, cares deeply about whether candidates know what they do not know. Interview answers that include explicit uncertainty ("I am about 70% confident the answer is X, here is why") tend to do better than confident wrong answers.
Curiosity for the problem. Internship interviewers want to see genuine intellectual engagement with the question, not just an answer. Candidates who explore extensions or alternative formulations - even if they don't fully solve the problem - often do better than candidates who solve it quickly without engagement.
A track record of finishing things. Jane Street looks for evidence that you ship complete work. A finished side project is more compelling than three half-finished ones. A competitive programming contest result is stronger than vague "I love coding" answers.
For broader context on what firms look for in early-career candidates, see our quantitative analyst career guide.
Compensation & recruiting notes
Pay ranges in this guide are illustrative estimates from publicly discussed bands and anecdotal reports - not official figures from the employer. Packages vary widely by desk, office, performance, and year. Hiring processes change; nothing here guarantees an interview, assessment format, or offer.
Frequently Asked Questions
When does the Jane Street internship application open for 2027?
August 2026. Applications are reviewed on a rolling basis - the earlier you apply, the better.
What is the Jane Street internship pass rate?
Jane Street does not publish official figures, but it is widely understood that fewer than 1% of applicants receive an internship offer. Reports vary by year and office.
How much do Jane Street interns earn?
In 2026, the monthly stipend is $25,000 to $30,000 in New York and £15,000 to £18,000 in London. Free furnished housing, daily meals, and flights to and from the office are included.
Do you need to know OCaml to apply?
No. Jane Street trains all interns in OCaml during the first week. Strong general programming ability (any language) is what is tested in the interview.
What is the return offer rate?
Widely reported above 80%, though Jane Street does not publish official figures.
When does the internship start and end?
Typically June through August or June through early September, depending on the office and the candidate's university calendar. The standard length is 10 to 12 weeks.
Can I do the Jane Street internship if I'm not at a target university?
Yes, but it is harder. Strong online assessment scores, demonstrable competitive programming results (Codeforces, ICPC), or significant open-source contributions can open the door for non-target candidates.
What is the difference between the Jane Street and Citadel internship?
Both are extremely competitive and pay well. Jane Street uses OCaml, has a more academic culture, and emphasises options market making. Citadel is broader (multi-strategy hedge fund and market maker), uses Python and C++, and pays comparable cash compensation. We have a Citadel internship guide covering Citadel's process specifically.
Can I do the Jane Street internship after graduating?
The summer internship is specifically for university students. If you have already graduated, apply for the full-time graduate programme instead. The internship is sometimes used as a "second look" by Jane Street for graduates the firm is interested in but is not yet ready to commit to full-time.
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