Top 26
Prep plan
Updated weekly · Last refresh Oct 17

1010data Data Engineer Interview Questions

The questions to prepare for a 1010data Data Engineer interview. Questions from real interview reports rank first. Updated daily.

26questions
~5htotal time
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1
CodingStart here. 8 questions · ~87 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStrings1010data
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo Pointers1010data
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2
Pipelines6 questions · ~65 min
Data Modeling Tools and ArchitectureEasy

Preferred tools and patterns for data modeling and pipeline architecture in a modern data platform.

InfrastructureToolsData Modeling1010data
Diagnose an Integration Pipeline IssueMedium

Structured approach to diagnose failures in an ETL integration, from source extraction through orchestration, data quality, and idempotent recovery.

ToolsDependenciesQuality1010data
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3
Behavioral & Leadership8 questions · ~87 min
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4
More topics4 questions · ~43 min
SQL vs NoSQL for Go-to-Market DataEasy

Explain how SQL and NoSQL differ in schema, consistency, scaling, and Demandbase-style analytics use cases.

JoinsData Wrangling1010data
JavaScript FamiliarityMedium

Evaluates your practical familiarity with JavaScript for data engineering workflows.

javascript1010data
Encryption Algorithms ExperienceMedium

Tests your understanding of encryption concepts and how you apply them in practice.

CommunicationOwnership1010data
Optimize Slow SQLHard

Tests query tuning skills including indexing, execution plans, and query rewrites.

SubqueriesJoinsData Wrangling1010data
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 26 questions plus 3 hands-on drills to finish this plan.