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Genentech Software Engineer Interview Questions

The questions to prepare for a Genentech Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 7 questions · ~59 min
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysGenentech
Optimizing Sorting for Large DatasetsMedium

Explain how to choose and optimize sorting approaches for large datasets based on memory, data distribution, and stability requirements.

ArraysSortingGreedyGenentech
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2
Execution8 questions · ~67 min
Prioritizing FeaturesMedium

Tests your product thinking, trade-off analysis, and ability to align delivery with stakeholder needs.

Trade-offsScope ManagementPrioritizationGenentech
Designing a Drug Discovery PlatformHard

Tests your system design skills for building platforms that support drug discovery workflows at scale.

Trade-offsSuccess CriteriaRoadmappingGenentech
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3
Behavioral & Leadership30 questions · ~253 min
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4
More topics5 questions · ~42 min
Backfilling Missing Pipeline DataMedium

Approach for safely backfilling missing data while preserving correctness, idempotency, and data quality.

ETLQualityGenentech
Comparing Cohorts Over TimeMedium

Tests your SQL skills for cohort-based outcome comparisons over time.

Window FunctionsDate FunctionsJoinsGenentech
Core OS and CS ConceptsMedium

Assesses your foundational OS and CS knowledge and practical application in software engineering.

Genentech
ETL for Clinical Trial DataHard

Tests your ability to design reliable ETL for clinical trial data used in analytics and decision-making.

ETLBatch ProcessingQualityGenentech
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Rolling Average Prescription VolumesMedium
Practice
Practice drill

Calculate three-month rolling Ocrevus prescription averages by regional territory using aggregation and window functions.

Window FunctionssqlGenentech
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 WranglingWaymo
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.