Top 30
Prep plan
Updated weekly · Last refresh Aug 30

Ness Digital Engineering Data Engineer Interview Questions

The questions to prepare for a Ness Digital Engineering 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. 10 questions + 2 drills · ~104 min
Third Highest Salary QueryMedium
Practice

Find the third-highest distinct active employee salary using a self-join and aggregation.

Ness Digital Engineering
Star vs Snowflake for Sales AnalyticsMedium

Compare star and snowflake schemas for warehouse design, including trade-offs in normalization, query simplicity, and analytics performance.

JoinsData WranglingGroup ByNess Digital Engineering
OLTP vs OLAP Database DesignMedium

Explain OLTP vs OLAP designs, including schema shape, workload patterns, and when each is appropriate in a data platform.

financial dataperformanceData ModelingNess Digital Engineering
SQL Top Salary QueryMedium
Practice
Practice drill

Use DENSE_RANK and a join to return Ness employee details earning the third-highest distinct salary.

aggregationsqlNess Digital Engineering
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
More SQL & Data Manipulation questions with a free account
2
Coding3 questions · ~25 min
List Comprehensions vs GeneratorsMedium

Tests Python efficiency and data manipulation choices relevant to building performant ETL components at Ness Digital Engineering.

Data WranglingfunctionspythonNess Digital Engineering
Parse JSON with PythonMedium

Tests Python data parsing and transformation ability for structured ingestion pipelines at Ness Digital Engineering.

Data WranglingStringsfunctionsNess Digital Engineering
More Coding 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
Pipelines6 questions · ~50 min
Incremental Loads Without TimestampsHard

Tests incremental ingestion design skills for messy sources in Ness Digital Engineering transformation projects.

Data WranglingETLBatch ProcessingNess Digital Engineering
ETL Failure RecoveryHard

Tests reliability engineering for ETL at Ness Digital Engineering, including validation, recovery, and operational resilience.

IdempotencyQualityNess Digital Engineering
Unix Scripting for ETL TriggersMedium

Tests practical automation skills for production data ingestion and orchestration at Ness Digital Engineering.

SchedulingAutomationNess Digital Engineering
More Pipelines questions with a free account
4
Behavioral & Leadership11 questions · ~92 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.