Top 26
Prep plan
Updated weekly · Last refresh Oct 17

Illumina Business Analyst Interview Questions

The questions to prepare for a Illumina Business Analyst interview. Questions from real interview reports rank first. Updated daily.

26questions
~3htotal time
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1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Analyzing Data in ProjectsMedium

Tests your end-to-end approach to analysis, from requirements to insights.

Data WranglingGroup ByAggregationsIllumina
Identifying Key TrendsMedium

Tests your ability to structure analysis and surface meaningful trends.

Window FunctionsData WranglingAggregationsIllumina
Deriving Insights From Complex DataMedium

Tests analytical thinking and ability to extract actionable insights from complex datasets.

JoinsData WranglingAggregationsIllumina
Accuracy and Data ReliabilityMedium

Tests data validation practices to produce trustworthy insights for YRC Freight decision-making.

Data WranglingETLQualityIllumina
Analyze Customer Purchase Trends with Window FunctionsEasy
Practice
Practice drill

Calculate the monthly spending trends for customers using window functions and joins.

The Home DepotAvisoHewlett Packard Enterprise
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
Top Daily Rides by VehicleMedium
Practice
Practice drill

Rank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.

Window FunctionsJoinsData WranglingWaymoCruise
2
Behavioral & Leadership20 questions · ~160 min
Behavioral Experience QuestionsEasy

Assesses ownership, adaptability, judgment, and measurable impact through a specific past experience.

behavioral questionsaccountabilitybehavioralIllumina
Five-Year VisionEasy

Tests career ambition, self-awareness, and whether the candidate's goals fit the role and company.

achievementcareer growthadaptabilityIllumina
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3
More topics2 questions · ~16 min
The finish line: interview-readyComplete all 26 questions plus 3 hands-on drills to finish this plan.