Top 15
Prep plan
Updated weekly · Last refresh Oct 17

Magic Leap Data Engineer Interview Questions

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

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1
PipelinesStart here. 8 questions · ~74 min
Design an End-to-End Data PipelineMedium

Approach for designing an end-to-end data pipeline from ingestion through transformation, storage, and downstream consumption.

data pipelinedesigningestionMagic Leap
Diagnose an Integration Pipeline IssueMedium

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

ToolsDependenciesQualityMagic Leap
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingMagic Leap
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2
SQL & Data Manipulation3 questions + 3 drills · ~58 min
Optimize a Slow SQL QueryHard

Tests deep SQL performance troubleshooting skills, including indexing, query plans, and execution bottlenecks.

Performance Tuningdatabase managementMagic Leap
Data Modeling TechniquesMedium

Tests your modeling choices for analytics and operational needs, including schema design tradeoffs.

JoinsData WranglingGroup ByMagic Leap
SQL vs NoSQL DifferencesEasy

Tests understanding of database tradeoffs and when to choose each approach.

SubqueriesJoinsData WranglingMagic Leap
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Cleaning a Messy DatasetMedium
Practice
Practice drill

Filter invalid game events and normalize event names using PostgreSQL string and null handling.

missing valuesdata cleaningnull handlingQuantiumScopelyCarvana
Data Cleaning and PrepMedium
Practice
Practice drill

Prepare valid encounter records by trimming text, excluding missing values, and removing invalid charges.

missing valuesdata cleaningData WranglingMassachusetts General HospitalCognizantDataVisor
3
More topics4 questions · ~37 min
Implement Join in PythonMedium

Tests your ability to translate join logic into correct and efficient code.

Hash TablesArraysSortingMagic Leap
Median Function ImplementationEasy
Practice

Sort a non-empty numeric list and return its middle value or the average of its two middle values.

MathArraysSortingMagic Leap
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