Notion Labs Data Engineer Interview Questions
The questions to prepare for a Notion Labs Data Engineer interview. Questions from real interview reports rank first. Updated weekly.
Approach for maintaining data quality and integrity across ETL pipelines.
Notion LabsApproach for running large historical backfills without breaking real-time pipeline freshness or correctness.
Notion LabsApproach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.
Notion LabsTests record linkage, deduplication logic, and conflict resolution across multiple data sources.
Notion LabsTests data quality strategies for imputing missing values and choosing appropriate methods.
Notion LabsTests ability to write production-minded Python for data cleaning and preprocessing.
Notion LabsTests query tuning skills, including indexing, execution plans, and rewriting strategies.
Notion LabsExplain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.
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Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITAggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.
B Lab Global
Tapad
ScaleCompute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.
ADP