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Block Interview Questions

The questions to prepare for Block interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 10 questions · ~121 min
2
Coding10 questions · ~121 min
Implement a Data Class With FeaturesMedium
Practice

Design a record collection class supporting insertion, removal, filtering, sorting, and grouped counts.

CodingabstractionData StructuresBlock
Requesting Unique Pairs RepeatedlyMedium
Practice

Generate a maximum matching while excluding pairs returned by earlier requests.

deduplicationData StructuresAlgorithmsBlock
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3
Pipelines10 questions · ~121 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityBlock
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4
Execution8 questions · ~97 min
Plan a Phased Operations RolloutMedium

Plan a phased rollout for a new operational initiative with clear stages, success criteria, and risk controls.

Launch Planningphased rolloutsProject ManagementBlock
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5
Metrics3 questions · ~36 min
Design an Operations KPI HierarchyMedium

Build a KPI hierarchy that links frontline operational signals to business outcomes and supports better decisions.

operational metricsperformance measurementkpi hierarchyBlock
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6
Sales & Customer5 questions · ~61 min
Close a Difficult DealMedium

Show how you rescued a hard deal by aligning stakeholders, handling conflict, and driving the close.

Stakeholder ManagementCommunicationOwnershipBlock
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7
More topics4 questions · ~48 min
Design a Hotel Booking AppHard

Design a hotel booking app end to end, covering client architecture, booking workflows, backend services, and product tradeoffs.

backend integrationbooking logicclient-sideBlock
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