Top 25
Prep plan
Updated weekly · Last refresh Aug 30

Criteo Data Engineer Interview Questions

The questions to prepare for a Criteo Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

25questions
~4htotal time
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1
CodingStart here. 8 questions · ~76 min
Longest Substring Without RepeatsMedium
Practice

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

Hash TablesStringsTwo PointersCriteo
Common Elements in Sorted ListsEasy
Practice

Return the sorted multiset intersection of two nondecreasing integer lists using two pointers.

Data StructuresCriteo
Sorting Algorithm and ComplexityMedium

Tests algorithmic fundamentals and ability to reason about performance tradeoffs.

RecursionArraysSortingCriteo
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2
Pipelines10 questions · ~94 min
Cleaning Missing Values in PipelinesEasy

Approach for handling missing values in a pipeline with data quality checks and repeatable transformations.

Data WranglingETLQualityCriteo
Describe a Complex Transformation PipelineMedium

Explain a complex ETL transformation you built, including the main challenges and how you handled them.

ETLData ModelingQualityCriteo
Design an ETL Pipeline for Large DatasetsMedium

Design an ETL pipeline to process 10TB of data daily from multiple sources into a data warehouse with strict data quality checks.

InfrastructureETLData ModelingCriteo
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3
SQL & Data Manipulation5 questions + 3 drills · ~77 min
4
More topics2 questions · ~19 min
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The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.