Practice the questions
quants actually get asked.

Most quant interviews mix coding, probability, statistics, and brainteasers across several rounds. The fastest path is to practice the same formats interviewers use. Start with easy questions to lock in the patterns, then drill medium-difficulty problems against a stopwatch. Myntbit organizes the question feed by difficulty, type, and target firm so you can build the habit without guessing what to study next.

C++ is the default at HFT shops like Jump Trading, Hudson River, and Optiver because of latency. Python is preferred at research-heavy firms like Two Sigma and Citadel. Most candidates write in whichever language they know best. What matters is that your code is correct, idiomatic, and runs fast enough. Myntbit lets you submit in C++, Python, Java, JavaScript, or Go.

Realistic timelines: 3–4 weeks of consistent practice (1–2 hours per day) for a junior or internship interview if you already know the material; 8–12 weeks if you're rebuilding probability and statistics from scratch. Curated study plans on Myntbit pace the work week-by-week so you're not cramming the night before.

Jane Street's interviews lean heavily on probability, expected value, and brainteasers. Think classic 'two-coin flip' or 'estimate the number of piano tuners in NYC' style questions. Trader rounds add fast mental math and tight market-making prompts. Practice the firm-specific question set on Myntbit's Jane Street prep page to match the format.

Developer interviews emphasize systems, low-latency C++, concurrency, and clean code. Researcher interviews test statistics, time series, and applied Python data work. Trader interviews focus on market intuition, options pricing, and brainteasers, where speed matters more than rigor. Myntbit has separate tracks for each so you don't waste time on questions outside your target role.

Every question is sourced from a real interview round at a real firm, tagged with the company that asked it. The library covers 1000+ questions across Jane Street, Citadel, Two Sigma, Optiver, Jump Trading, IMC, SIG, and 40+ other quant shops.

Browsing and trying sample questions is free. A free account unlocks submission tracking and progress saving across the question feed. Firm-specific prep tracks (Jane Street, Citadel, Two Sigma, etc.) and curated study plans are part of Myntbit Premium.

Easy / Medium / Hard tiers reflect the typical phase of a quant interview where the problem appears. Easy questions are early-screen filters, Medium questions cluster in the on-site rounds, and Hard questions show up in final-round combinations or on-site stress tests.

Yes. Each question is tagged with the firms that ask it, and there are dedicated firm-prep tracks for Jane Street, Citadel, Two Sigma, Optiver, Jump Trading, IMC, SIG, Citadel Securities, and more. Open the firm page to see every question tagged for that company plus a recommended sequence.