Top 47
Company roadmap
Updated weekly · Last refresh Oct 17

Cognira Interview Questions

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

47questions
~8htotal time
Track your progressSign up free to work through all 47 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 14 questions · ~134 min
Merge Two Sorted ArraysEasy
Practice

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

ArraysSortingTwo PointersCognira
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersCognira
More Coding questions with a free account
2
Pipelines13 questions · ~124 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCognira
Debugging Production Data PipelinesMedium

A structured approach to debugging production data pipelines, with focus on orchestration, data quality, idempotency, and safe backfills.

InfrastructureToolsQualityCognira
More Pipelines 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
Behavioral & Leadership16 questions · ~153 min
More Behavioral & Leadership questions with a free account
4
More topics4 questions · ~38 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
Optimizing SQL Query PerformanceHard

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

Window FunctionsJoinsAggregationsCognira
Optimize a Slow SystemHard

Evaluates your performance troubleshooting process and ability to prioritize fixes with evidence.

Trade-offsRisk AssessmentCognira
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 47 questions plus 3 hands-on drills to finish this plan.