Teza Technologies Interview Questions
A practice mix for Teza's quant-research and quant-dev loops: probability and expected value, streaming/array coding, statistics, and balance-scale brain-teasers.
Inside the Teza Technologies interview
Teza Technologies is a Chicago-based quantitative proprietary trading firm running high-frequency and systematic strategies. Its loops split across Quant Researcher and Quant Developer tracks, so interviews pair probability and statistics with clean, fast coding on streaming and order-book-shaped data.
What they test
The two pillars are quantitative coding and probability / expected value. The coding side leans on streaming and array problems — rolling medians, online mean/variance, reservoir sampling, search in sorted structures — the kind of state you maintain over a live data feed. The math side asks you to reason cleanly about random walks, stopping rules, and waiting times, then back it with statistics (estimation, multiple-testing, sampling-bias) the way an alpha team actually vets a signal.
The recurring shapes
Expect optimal-stopping and gambler's-ruin setups, coupon-collector and random-walk-on-a-graph expectations, and order-statistic reasoning over a stream. On the research side, watch for false-discovery / multiple-testing traps in backtests and classic estimators like the German tank problem. A representative gambler's-ruin identity for a fair walk between 0 and N:
How to approach
For coding, state the data structure first (two heaps for a rolling median, a single accumulator for online variance) and keep it O(1) or O(log n) per update — latency is the point. For probability, set up the recursion or the indicator/linearity-of-expectation argument before grinding algebra, and name the symmetry that collapses the work. For the brain-teasers (twelve balls, two hourglasses, ranking horses), the win is an information-counting argument, not cleverness.
The mix leans medium with a strong block of hard problems and one easy warm-up, mirroring a loop that pushes on both research depth and engineering speed.
Teza Technologies coding questions (7)
Teza Technologies expected value questions (6)
Teza Technologies probability questions (5)
Teza Technologies brain teasers questions (3)
Teza Technologies statistics questions (3)
Teza Technologies interview FAQ
What kind of questions does Teza Technologies ask in quant interviews?
Candidates most often report coding, expected value and probability questions. This page collects 24 of them, 2 stamped with the month they were last reported — each with a full worked solution.
How hard are Teza Technologies interview questions?
The set spans 1 easy, 13 medium and 10 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 Teza Technologies quant interview?
Work through this set by topic (use the sidebar), starting from your weakest area. 9 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 Teza Technologies interview questions?
They are built from candidate-reported Teza Technologies 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 24 carry the month they were last reported.