Wintermute Interview Questions
A crypto algorithmic-market-maker practice mix: quoting and adverse selection, order-book microstructure, probability and EV, and streaming/matching coding.
Inside the Wintermute interview
Wintermute is a London-founded algorithmic market maker in crypto, quoting two-sided liquidity across hundreds of digital assets on centralized and decentralized venues. Its interviews emphasize market-making mechanics, probability and expected value, and clean algorithmic coding under latency and inventory constraints.
What they test
The largest block is market-making and microstructure — quoting a bid-ask spread, the Glosten-Milgrom zero-profit condition, adverse selection, Avellaneda-Stoikov inventory skew, and order-book mechanics including DeFi/CeFi arbitrage and execution (VWAP/TWAP). Around it sits a probability and EV core (coin-pattern races, optimal stopping, bet sizing) and a coding layer of streaming and matching algorithms.
The recurring shapes
A quote sits at fair value plus half a spread; the spread must cover the expected loss to informed flow. The break-even half-spread against a fraction of informed traders takes the recurring form below, and inventory pushes the quote midpoint away from fair by a risk-and-time penalty.
How to approach
State your fair value first, then layer on adverse-selection and inventory adjustments before you quote. For the coding rounds, reach for the canonical streaming tools — a median-from-a-stream heap, reservoir sampling, quickselect, and a FIFO P&L / order-matching engine — and reason about EV and Kelly sizing before committing capital.
The mix leans medium with a strong hard tail in the market-making and execution problems, plus a few easy warm-ups on order-book intuition.
Wintermute market microstructure questions (9)
- DeFi-CeFi Arbitrage Mechanics and Price Impact Estimation
- Build an Order-Matching Engine: Limit, Market, Stop, Cancel
- One-Step Avellaneda-Stoikov Market Making
- Adverse Selection and the Break-Even Spread
- Glosten-Milgrom Zero-Profit Bid-Ask Quotes
- Market Making Game: Quoting Bid-Ask Spreads
- Reading a Fair Value Off the Order Book
- VWAP vs TWAP: When Each Execution Algorithm Breaks
- Order Book Dynamics and Price Formation
Wintermute coding questions (5)
Wintermute expected value questions (3)
Wintermute game theory questions (3)
Wintermute brain teasers questions (2)
Wintermute probability questions (2)
Wintermute stochastic processes questions (2)
Wintermute interview FAQ
What kind of questions does Wintermute ask in quant interviews?
Candidates most often report market microstructure, coding and expected value questions. This page collects 26 of them, 2 stamped with the month they were last reported — each with a full worked solution.
How hard are Wintermute interview questions?
The set spans 1 easy, 20 medium and 5 hard problems. Most sit at medium difficulty — solvable in a few minutes with clean reasoning — with a harder tail that rewards knowing the canonical tricks.
How do I prepare for the Wintermute quant interview?
Work through this set by topic (use the sidebar), starting from your weakest area. 10 problems are free to open with their full solution, so you can judge the quality before anything else. Then broaden out with the related firms below — the question families overlap heavily.
Are these the actual Wintermute interview questions?
They are built from candidate-reported Wintermute questions. We rewrite each prompt for clarity and author the worked solutions ourselves — we don't claim the wording is verbatim, and we never invent questions or recycle generic lists. 2 of 26 carry the month they were last reported.