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Clear street Interview Questions

The questions to prepare for Clear street interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 24 questions · ~217 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersClear street
Maximum Depth of Binary TreeEasy
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Problem Given the root of a binary tree, return its maximum depth as an integer. The maximum depth is the number of nodes along the longest path from the ...

RecursionQueueTreesClear street
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2
Metrics5 questions · ~45 min
Define Success for a ProjectEasy

Define what success means for a project using clear KPIs, a north star, and supporting metrics.

KPIsSuccess CriteriaDiagnosisClear street
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3
SQL & Data Manipulation4 questions + 3 drills · ~66 min
4
Strategy5 questions · ~45 min
Validate Business Case AssumptionsHard

Tests your rigor in testing assumptions, reducing risk, and using evidence to support decisions.

EstimationCompetitive AnalysisMarket SizingClear street
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5
Behavioral & Leadership7 questions · ~63 min
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6
More topics5 questions · ~45 min
Build a User Feedback ProcessEasy

A structured approach for gathering user feedback, synthesizing it, and turning it into product decisions.

User ResearchUser NeedsPain PointsClear street
Backfill While Preserving Real TimeHard

Approach for running large historical backfills without breaking real-time pipeline freshness or correctness.

Stream ProcessingDependenciesBackfillingClear street
Advanced Analytics ExperienceHard

Tests your depth in advanced analytics and your ability to apply it to data-intensive business problems.

ExperimentationRegressionCausal InferenceClear street
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.