Dataford
Dataford
Top 38
Prep plan
Updated weekly · Last refresh Oct 17

TransUnion Data Engineer Interview Questions

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

38questions
~5htotal time
Track your progressSign up free to work through all 38 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 8 questions + 2 drills · ~87 min
SQL Window DeduplicationMedium
Practice

Use ROW_NUMBER and windowed COUNT to retain the latest TruValidate record for each duplicate business key.

Window FunctionsdeduplicationRankingTransUnion
Core SQL BasicsEasy

Assesses foundational SQL knowledge for querying and data manipulation.

sql basicsdata managementTransUnion
SQL for Two-Table QuestionsMedium

Evaluates ability to join and query across multiple tables correctly.

Joinssql queriesTransUnion
Inner Join vs Left JoinEasy
Practice
Practice drill

Use a LEFT JOIN to return every user, including users without an assignment, and distinguish unmatched rows from matched rows.

null handlingJoinssqlTransUnionThirdware SolutionAntra
Top Accounts by Support Ticket VolumeEasy
Practice
Practice drill

Task You are given support ticket data and account metadata. Write a PostgreSQL query that returns the top 10 accounts by support ticket volume in the last...

JoinsGroup ByAggregationsTransUnion
More SQL & Data Manipulation questions with a free account
2
Pipelines17 questions · ~141 min
Unix Command Line for Data WorkMedium

Tests practical Unix fluency for working with files and logs.

data loadingTransUnion
Hive Table Types and FormatsHard

Evaluates Hive table concepts and practical implications of file formats.

data processingsparkTransUnion
More Pipelines questions with a free account
3
Behavioral & Leadership10 questions · ~83 min
More Behavioral & Leadership questions with a free account
4
More topics3 questions · ~25 min
Swap Lists Without VariablesMedium

Tests coding fundamentals and ability to reason about operations.

Data StructuresTransUnion
Hive vs NoSQL and Advanced ConceptsMedium

Evaluates breadth of data platform knowledge and technology selection judgment.

nosqlsparkTransUnion
Cloud BasicsEasy

Assesses baseline cloud knowledge relevant to building data pipelines.

backgroundtechnical experienceCloudTransUnion

Sign up to see every question

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

Get my prep plan
The finish line: interview-readyComplete all 38 questions plus 2 hands-on drills to finish this plan.