Jane Street vs Optiver
Jane Street emphasises reasoning depth and conceptual conversations; Optiver emphasises arithmetic speed and rapid-fire probability. Both are elite — the differences are in what they select for.
OVERVIEW
Jane Street and Optiver are both top-tier quant firms, but they optimise for meaningfully different candidate profiles. Jane Street's hiring bar is built around extended probability discussions where a candidate is evaluated less on speed and more on the clarity, honesty, and flexibility of their reasoning — interviews last long, single problems are pushed in multiple directions, and 'I don't know, but here's how I'd figure it out' is a positive signal. Optiver's bar runs the opposite direction: the 80in8 arithmetic screen filters ruthlessly on raw speed, interviews move fast, and the cultural fit test is whether you'd enjoy a fast-paced trading floor environment. Both firms are famous for being selective, but the underlying skill profile they screen for has almost no overlap. Candidates preparing for both should train on orthogonal axes simultaneously.
SIDE BY SIDE
| Jane Street | Optiver | |
|---|---|---|
| Early-round screen | Recruiter call + probability-heavy phone interview. No arithmetic speed test at Jane Street. | 80in8 arithmetic test (80 problems in 8 minutes). The single biggest filter in the Optiver funnel — most candidates are eliminated here. |
| Interview style | Conversational, extended probability discussions. Single problems pushed in 2–3 directions. Interviewers want to hear the model, not just the answer. | Rapid-fire, shorter problems. Trading instincts and mental math under pressure valued. Interviewers interrupt on purpose to test composure. |
| Probability depth | Deep. Classic brainteasers + open-ended generalisations. Knowledge of order statistics, random walks, martingales helps at senior levels. | Solid but narrower. Expected value, conditional probability, dice/coin classics, and market-making estimation dominate. |
| Arithmetic requirement | Useful but not screened directly. Fluency helps in interviews but you won't be eliminated for slow mental math alone. | Non-negotiable. 80in8 passing scores require dedicated arithmetic training (usually zetamac or similar for 2–4 weeks). |
| Culture | Intellectual, academic. Emphasis on curiosity and rigor. New-grad hires often come from strong math / CS / physics backgrounds. | Fast, competitive, trading-first. Dutch-origin culture; less hierarchical. Heavier weight on wanting to be a trader specifically. |
| Offices | New York (HQ), London, Hong Kong. Each office has distinct trading strategies. | Amsterdam (HQ), Chicago, Sydney. Amsterdam is the deepest bench; Chicago is the US hub. |
| Compensation | Top of the market for new grads. Total comp in the $400–600k+ range first year is typical for US roles, varying by role. | Competitive but typically below Jane Street at the top. First-year trader total comp in the $250–400k range is common. |
WHICH IS RIGHT FOR YOU
Their interview style rewards conceptual depth and enjoyment of the subject.
The 80in8 screens out slow candidates early; the downstream process is a fit for arithmetic-strong traders.
Their research orientation and depth-favouring interviews align with academic backgrounds.
Options market-making is a core Optiver business. Jane Street trades options too, but Optiver is the specialist.
FAQ
Yes — many candidates do. The skill sets are different enough that the preparation is largely parallel (arithmetic drilling for Optiver, probability depth for Jane Street). Allocate your prep time accordingly rather than assuming one set of problems covers both.
Both acceptance rates are low single-digit percent. Jane Street is harder for conceptual-depth roles; Optiver is harder for speed-based roles. 'Harder' depends on which skill profile you fit.
Not as a gating screen. Mental-math fluency helps during interviews (especially for trading roles), but you won't be eliminated for being slow on arithmetic alone the way you would at Optiver.
Yes — both firms test core probability, expected value, and Markov chain problems. The differences show up in framing (open-ended at JS, time-pressured at Optiver) and in what follow-ups interviewers push.
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In the classical secretary problem, as n → ∞, what fraction should you reject outright before accepting the next best-so-far candidate?
Jane Street interviews demand depth on probability and open-ended reasoning. QuantPrep trains both.
Optiver interviews emphasise arithmetic speed and probability fluency. QuantPrep builds both.
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