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Teknei Interview Questions

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

21questions
~3htotal time
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1
SQL & Data ManipulationStart here. 11 questions + 3 drills · ~118 min
Optimizing Slow PostgreSQL Production QueriesHard

Explain how to diagnose slow PostgreSQL queries in production and choose effective indexing strategies.

Performance Tuningindexesquery optimizationTeknei
Complex SQL Optimization for Large DatasetsMedium

Tests advanced SQL optimization techniques for large-scale analytics workloads.

large datasetsTeknei
Data Quality During EDAMedium

Assesses your approach to diagnosing and mitigating data quality problems during EDA.

Data Qualitydata integrityTeknei
Automating Reporting WorkflowsMedium

Evaluates your ability to reduce manual effort by automating reporting workflows.

efficiencyAutomationTeknei
Scalable Power BI Data ModelsMedium

Tests your design practices for building scalable, maintainable Power BI models.

scalabilitypower biData ModelingTeknei
Microsoft Fabric in a Modern StackMedium

Assesses your ability to connect Fabric capabilities with an end-to-end analytics architecture.

integrationTeknei
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
Top Content by Watch TimeMedium
Practice
Practice drill

Rank Disney+ Hotstar content by monthly watch time using aggregation, joins, and ROW_NUMBER().

Window FunctionsData Analysisquery optimizationDDisney+HotStar
Top Users by Region QueryMedium
Practice
Practice drill

Rank the top 10 ResMed myAir users in each region using joins, aggregation, and ROW_NUMBER().

Data AnalysissqlResmed
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2
Behavioral & Leadership9 questions · ~72 min
Prioritizing Competing Data RequestsMedium

Tests prioritization under pressure in a data engineering context, including stakeholder management, trade-off decisions, and ownership of outcomes.

Decision MakingStakeholder ManagementPrioritizationTeknei
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3
More topics1 question · ~8 min
The finish line: interview-readyComplete all 21 questions plus 3 hands-on drills to finish this plan.