Dataford
Top 30
Prep plan
Updated weekly · Last refresh Aug 30

Nielsen Data Engineer Interview Questions

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

30questions
~4htotal time
Track your progressSign up free to work through all 30 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 11 questions + 2 drills · ~114 min
Strictly Increasing Prices QueryHard
Practice

Use LAG and aggregation to find Nielsen products whose observed monthly prices strictly increase.

sqlAggregationsNielsen
SQL Joins and Use CasesEasy

Assesses your understanding of relational joins and practical query design.

data relationshipsJoinssqlNielsen
Deduplicate Rows in SQLMedium

Tests your ability to write correct SQL for duplicate detection and cleanup.

Data ManipulationsqlNielsen
Average Session Time by UserMedium
Practice
Recently asked
Practice drill

Calculate average Nielsen Digital Content Ratings session duration per user using a CTE, interval arithmetic, aggregation, and a LEFT JOIN.

sql queryData AnalysisNielsenThe Nielsen
Average Vehicle Idle Time by ZoneHard
Practice
Practice drill

Use joins, a CTE, and aggregations to calculate average vehicle idle minutes in a specific geographic zone.

JoinsData ManipulationsqlWaymo
More SQL & Data Manipulation questions with a free account
2
Pipelines9 questions · ~77 min
spark-submit Syntax and Use CasesEasy

Tests your practical command-line knowledge for running Spark jobs.

sparkdeploymentNielsen
Connect Spark to External DataMedium

Evaluates your knowledge of Spark data connectivity and integration patterns.

sparkawsNielsen
Master-Worker Cluster ArchitectureMedium

Assesses your understanding of distributed system roles and execution flow.

data pipelinesdistributed systemsarchitectureNielsen
More Pipelines questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
Coding7 questions · ~60 min
Longest Unique SubstringMedium

Tests your ability to design and implement an efficient string algorithm.

leetcodeStringsNielsen
N-ary Tree TraversalMedium

Tests your ability to implement correct tree traversal logic and recursion/iteration choices.

Data StructurestraversalTreesNielsen
More Coding questions with a free account
4
Behavioral & Leadership3 questions · ~26 min
More Behavioral & Leadership questions with a free account
The finish line: interview-readyComplete all 30 questions plus 2 hands-on drills to finish this plan.