NBCUniversal Advertising Products & Solutions Data Engineer Interview Questions

The questions to prepare for a NBCUniversal Advertising Products & Solutions Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

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Batch vs Streaming Data ProcessingEasy

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

Stream ProcessingETLBatch Processing

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Data Quality and Schema Evolution

Medium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQuality

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Design an End-to-End Data Pipeline

Medium

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

data pipelinedesigningestion

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Cloud Platform Experience for Pipelines

Medium

Describe practical experience building pipelines on AWS, including orchestration, security, and data quality.

InfrastructureETLData Modeling

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Technical Decision Under Uncertainty

Medium

Tests decision-making under ambiguity, risk assessment, and ownership when technical choices must be made quickly.

Decision MakingOwnershipDealing With Ambiguity

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RANK vs DENSE_RANK in LeaderboardsEasy

Explain how RANK() and DENSE_RANK() handle ties differently in ordered SQL results such as leaderboards.

Window FunctionsRankingData Wrangling

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Optimizing Large Analytical SQL Queries

Hard

Explain how to diagnose and optimize a slow analytical query on a multi-terabyte event table using SQL-aware tuning strategies.

JoinsData WranglingCTEs

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Second Highest Trader Salary

Easy

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSorting

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