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Capgemini Invent Software Engineer Interview Questions

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

29questions
~4htotal time
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1
CodingStart here. 7 questions · ~65 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsCapgemini Invent
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysCapgemini Invent
REST vs SOAP Web ServicesEasy

Compare REST and SOAP web services across architecture style, message format, transport, and common tradeoffs.

ArraysStringsCapgemini Invent
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2
Execution6 questions · ~55 min
Scalable API Design with TestingMedium

Tests your API design skills, test strategy, and long-term maintainability planning.

Trade-offsSuccess CriteriaScope ManagementCapgemini Invent
Optimizing Slow Application PerformanceMedium

Tests your performance troubleshooting workflow and ability to apply targeted optimizations.

Trade-offsSuccess CriteriaRisk AssessmentCapgemini Invent
Analytics-Ready Database SchemaMedium

Tests your data modeling for analytics workloads, including performance and query patterns.

Trade-offsSuccess CriteriaData ModelingCapgemini Invent
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3
Behavioral & Leadership14 questions · ~129 min
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4
More topics2 questions · ~18 min
End-to-End GenAI Solution DesignHard

Tests your ability to architect GenAI systems with evaluation, safety, and client value in mind.

ML RankingRetrievalRecommendation SystemsCapgemini Invent
Upgrading Databases Without DowntimeMedium

Tests your approach to zero-downtime database upgrades and safe testing practices.

Capgemini Invent
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
Top Products by Sales RevenueEasy
Practice
Practice drill

Find the top 10 products by total sales revenue using joins, aggregation, and a CTE.

RankingGroup ByAggregationsRTXiSmile TechnologiesCatalina
The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.