Dataford
Top 15
Prep plan
Updated weekly · Last refresh Sep 9

Information Tech Consultants Data Engineer Interview Questions

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

15questions
~2htotal time
Track your progressSign up free to work through all 15 questions and resume where you left off.
Start practicing free →
1
PipelinesStart here. 7 questions · ~63 min
Optimize Skewed Spark JoinMedium

Optimize a Spark join where skewed keys create long-running tasks during a transaction to merchant metadata enrichment step.

JoinsperformancesparkInformation Tech Consultants
Design an End-to-End Data PipelineMedium

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

data pipelinedesigningestionInformation Tech Consultants
Data Quality and Schema EvolutionMedium

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

schema evolutionData ModelingQualityInformation Tech Consultants
More Pipelines questions with a free account
2
Coding3 questions · ~27 min
Python OOP and String OpsHard

Evaluates your ability to implement Python solutions using OOP and correct string and aggregation logic.

aggregationpythonoopInformation Tech Consultants
Python Challenges From HackerRankMedium

Assesses your problem-solving process and coding accuracy on timed Python challenges.

Information Tech Consultants
Flatten Nested JSON with PythonMedium

Tests practical Python skills for transforming semi-structured data into relational schemas.

json parsingData WranglingfunctionsInformation Tech Consultants
3
Behavioral & Leadership4 questions · ~36 min
Thriving in Client-Facing AmbiguityEasy

Tests motivation for consulting plus adaptability, client focus, and ownership in a changing stakeholder environment.

career goalscompany fitmotivationInformation Tech Consultants
More Behavioral & Leadership questions with a free account
4
More topics1 question · ~9 min
Second Highest Trader SalaryEasy
Practice

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

SubqueriesRankingSortingInformation Tech Consultants

Sign up to see every question

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

Get my prep plan
Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieCisco Restaurant + BarDevoteam
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
The finish line: interview-readyComplete all 15 questions plus 2 hands-on drills to finish this plan.