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Cognira Interview Questions

The questions to prepare for Cognira interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 14 questions · ~128 min
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo PointersCognira
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsCognira
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2
Pipelines13 questions · ~119 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCognira
Data Integration Tools ExperienceEasy

Discuss the data integration tools you have used and how they fit into ETL, orchestration, and data quality workflows.

InfrastructureToolsETLCognira
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3
Behavioral & Leadership18 questions · ~165 min
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4
More topics5 questions · ~46 min
Balance Speed, Quality, and ScopeMedium

Describe how you handled a tough trade-off between shipping fast, maintaining quality, and reducing scope.

Trade-offsRisk AssessmentScope ManagementCognira
Relational vs Non-RelationalEasy

Tests your foundational understanding of database models for data engineering work at Cognira.

JoinsData WranglingCognira
Docker FundamentalsMedium

Assesses your understanding of containerization concepts relevant to enterprise software delivery.

dockercontainerizationCognira
Optimizing SQL Query PerformanceHard

Tests your ability to diagnose and improve SQL performance using query and data modeling techniques.

Window FunctionsJoinsAggregationsCognira
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
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
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
Handle Missing Financial Input ValuesMedium
Practice
Practice drill

Use joins, CTEs, and CASE logic to flag and fill missing financial fields for Qlik planning records.

Data WranglingETLQualityQlik
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.