Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Incedo Data Engineer Interview Questions

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

50questions
~7htotal time
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1
CodingStart here. 9 questions · ~78 min
Merge Two Sorted Linked ListsEasy
Practice

Merge two sorted singly linked lists into one sorted list by relinking existing nodes.

RecursionLinked ListsSortingIncedo
Tree Height Coding RoundMedium

Tests your ability to implement correct tree algorithms and reasoning.

Data StructuresIncedo
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2
SQL & Data Manipulation12 questions + 2 drills · ~123 min
Department-Wise Second Highest SalaryMedium
Practice

Use DENSE_RANK and a department join to identify each department's second-highest distinct salary.

Window FunctionsRankingGroup ByIncedo
Simplify Reporting Queries with CTEsEasy

Explain how CTEs make complex PostgreSQL queries easier to read, debug, and maintain in reporting workflows.

SubqueriesJoinsCTEsIncedo
Compare Periods with LAG and LEADMedium

Explain how LAG and LEAD compare current rows to previous or next periods in time-series SQL analysis.

Window FunctionsLag/LeadDate FunctionsIncedo
SQL Join Matching RowsEasy
Practice
Practice drill

Filter Revature assessment records to find candidates who passed SQL Fundamentals, then sort the matching rows by candidate name.

SubqueriesJoinsData WranglingIncedoCloudFactoryRevature
SQL Running Total by DateMedium
Practice
Practice drill

Aggregate posted OneTrust privacy request charges by date and calculate cumulative revenue with a CTE and window function.

Window FunctionsDate FunctionsRunning TotalsC5iIIBM Business ServicesFreddie Mac
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3
Pipelines23 questions · ~198 min
ETL vs ELT Trade-offsEasy

Compare ETL and ELT, and explain when ELT is the better pipeline pattern.

ETLELTData ModelingIncedo
Data Quality in ML PipelinesMedium

Approach for maintaining high quality data across ML pipelines, from ingestion through feature generation and model consumption.

Data QualityInfrastructureData WranglingIncedo
Batch vs Streaming Data ProcessingEasy

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

Stream ProcessingETLBatch ProcessingIncedo
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4
Behavioral & Leadership6 questions · ~52 min
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.