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Updated weekly · Last refresh Aug 30

Kumaran Systems Data Visualisation Specialist Interview Questions

The questions to prepare for a Kumaran Systems Data Visualisation Specialist interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 7 questions + 3 drills · ~86 min
Securing Dashboards With RLSMedium

Evaluates your approach to implementing secure, role-based access in Power BI.

data securityKumaran Systems
Power BI Performance TuningMedium

Evaluates your troubleshooting and optimization techniques for slow Power BI reports.

Performance TuningKumaran Systems
Optimizing Queries for MillionsHard

Tests performance engineering skills for large-scale Power BI models and datasets.

Performance TuningData ModelingKumaran Systems
Migrating Cognos to Power BIMedium

Evaluates your migration experience and risk awareness when modernizing BI reporting.

migrationKumaran Systems
Power Query TransformationsMedium

Assesses your end-to-end data preparation workflow across multiple source systems.

Kumaran Systems
Second Highest Without AggregatesHard
Practice
Practice drill

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

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
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
SQL Data Quality ChecksHard
Practice
Practice drill

Detect missing fields, duplicate transaction keys, invalid amounts, and merchant reference issues with PostgreSQL CTEs and joins.

Data Qualitynull handlingdata integritySigmoid
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2
More topics4 questions · ~32 min
Prioritizing When Pages Get CrowdedMedium

Tests product sense for scoping, prioritization, and clarity in dashboard layouts.

Stakeholder ManagementFeature Prioritizationdashboard designKumaran Systems
Designing Dashboards From ScratchMedium

Evaluates your dashboard design process and visualization decision-making.

project experiencedashboard designKumaran Systems
Explaining Data Issues to StakeholdersMedium

Tests whether you can translate complex trends or data quality issues into clear business language and drive stakeholder alignment.

Data QualityStakeholder ManagementCommunicationKumaran Systems
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The finish line: interview-readyComplete all 11 questions plus 3 hands-on drills to finish this plan.