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Updated weekly · Last refresh Aug 30

Cgi Nederland Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 12 questions · ~109 min
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonCgi Nederland
Create Object With Getters SettersEasy
Practice

Implement a validated configuration object with private attributes, setters, getters, and ordered updates.

javaobject-oriented programmingCgi Nederland
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2
System Design4 questions · ~36 min
Scalability and MaintainabilityMedium

Tests engineering judgment around architecture, code quality, and long-term operations.

system designarchitectureCgi Nederland
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3
SQL & Data Manipulation12 questions + 3 drills · ~139 min
CRUD With SQLMedium

Tests practical SQL skills for data manipulation and retrieval.

Data WranglingsqlmodelingCgi Nederland
Table RelationshipsEasy

Tests understanding of relational modeling and how tables relate in databases.

JoinssqlmodelingCgi Nederland
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
SQL Rolling Average and RankingHard
Practice
Practice drill

Use CTEs and window functions to calculate 7-day transaction averages and rank Loft users within each region.

Window FunctionsRankingRunning TotalsLoftArcadisCgi Nederland
Top Earners via Table JoinMedium
Practice
Practice drill

Rank Motorola Solutions employees by total earnings using a LEFT JOIN, aggregation, COALESCE, and ROW_NUMBER.

JoinssqlMotorola SolutionsMotorola
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4
Execution4 questions · ~36 min
Debugging a Complex SystemMedium

Tests your diagnostic process, instrumentation use, and systematic elimination of root causes.

ToolsRisk AssessmentQualityCgi Nederland
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5
Pipelines4 questions · ~36 min
Real-Time Data Processing DesignHard

Tests your understanding of streaming architectures, latency tradeoffs, and reliable end-to-end data flow.

InfrastructureStream ProcessingSchedulingCgi Nederland
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6
Security & Infrastructure11 questions · ~100 min
Splunk and Grafana ExperienceMedium

Assesses your practical knowledge of observability and monitoring tooling.

monitoringdata visualizationCgi Nederland
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7
More topics3 questions · ~27 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.