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CGI Group Software Engineer Interview Questions

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

50questions
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1
CodingStart here. 14 questions · ~133 min
Find Second Largest in ArrayEasy
Practice

Scan the array once to track the largest and second largest distinct values in O(n) time.

ArraysSortingGreedyCGI Group
Reverse String In PlaceEasy
Practice

Reverse a string using a two-pointer approach by converting it to a mutable character list in Python.

CodingStringsProgrammingCGI Group
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2
SQL & Data Manipulation13 questions + 3 drills · ~154 min
Understanding Primary Keys in DatabasesEasy

Explain the concept of a primary key and its importance in database design.

CGI Group
SQL CRUD QueriesMedium

Tests practical SQL skills for CRUD operations and data retrieval.

JoinsData WranglingsqlCGI Group
Top 5 Products Per MonthMedium
Practice
Practice drill

Rank completed product sales by month using joins, aggregation, date truncation, and ROW_NUMBER().

sqlCGICgi NederlandCGI Group
Third Highest Value with PySparkMedium
Practice
Practice drill

Use PostgreSQL CTEs and DENSE_RANK to return the third-highest distinct Canadian salary, with defined fallbacks.

aggregationsqlCGI Group
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
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3
Execution6 questions · ~57 min
Designing a Scalable Web AppMedium

Tests system design fundamentals for reliability, scalability, and maintainability.

Launch PlanningTrade-offsRoadmappingCGI Group
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4
System Design3 questions · ~29 min
Track Cars System DesignHard

Tests system design skills for data ingestion, storage, and near-real-time reporting.

system designdistributed systemsarchitectureCGI Group
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5
Security & Infrastructure7 questions · ~67 min
Networking Troubleshooting ApproachMedium

Evaluates your troubleshooting methodology for networking and infrastructure issues.

NetworkingTroubleshootingCGI Group
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6
Pipelines3 questions · ~29 min
SSIS Scenario HandlingMedium

Evaluates your practical experience handling ETL implementation challenges.

CGI Group
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7
More topics4 questions · ~38 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.