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NASA Jet Propulsion Laboratory Data Engineer Interview Questions

The questions to prepare for a NASA Jet Propulsion Laboratory Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
PipelinesStart here. 9 questions · ~83 min
Preferred ETL and Transformation ToolsEasy

Explain your preferred extraction and transformation stack, and the reasoning behind those tool choices.

ToolsETLELTNASA Jet Propulsion Laboratory
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityNASA Jet Propulsion Laboratory
Handle Messy Visualization InputsHard

Approach for turning a large messy dataset with missing and inconsistent fields into visualization-ready data.

Data WranglingETLQualityNASA Jet Propulsion Laboratory
Warehouse Analytics ExperienceEasy

Discuss practical experience using a data warehouse for analytics, including loading, transformation, orchestration, and data quality.

InfrastructureData ModelingNASA Jet Propulsion Laboratory
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingNASA Jet Propulsion Laboratory
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2
Behavioral & Leadership4 questions · ~37 min
Influencing a Cross-Functional DecisionMedium

Tests influence without authority through stakeholder alignment, clear communication, and ownership of a team decision.

Influence Without AuthorityStakeholder ManagementCommunicationNASA Jet Propulsion Laboratory
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3
More topics2 questions · ~19 min
Merge Two Sorted ArraysEasy
Practice

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

ArraysSortingTwo PointersNASA Jet Propulsion Laboratory
Efficient Retrieval and UpdatesMedium

Tests understanding of data structures, time complexity, and practical implementation choices.

Hash TablesArraysSearchingNASA Jet Propulsion Laboratory

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