Factual Data Engineer Interview Questions
The questions to prepare for a Factual Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Find the longest substring with all unique characters using a sliding window.
FactualWrite six regular expressions to extract Yelp restaurant details such as location, hours, phone, price, rating, and cuisine.
FactualFind requested words in a character grid by comparing each word's letter counts with the grid.
FactualDesign a spike-resilient AWS data pipeline handling 750K events/sec while preserving low latency, data quality, and replay safety.
FactualA structured approach to debugging production data pipelines, with focus on orchestration, data quality, idempotency, and safe backfills.
FactualApproach for maintaining data quality and integrity across ETL pipelines.
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Tests ownership in ambiguous data engineering work, including prioritization, stakeholder alignment, and driving measurable outcomes.
FactualTests query optimization skills for large-scale datasets in a location-data environment.
FactualRetrieve valid activity records with filtering, NULL-safe behavior, and deterministic ordering.
FactualReplace missing sales fields with defined defaults and return a consistently ordered dataset.
University of Minnesota
The Home Depot
NationwideCalculate each user's running order total over time using a window function.
Bayer
Sparksoft
Western Digital