Top 25
Prep plan
Updated weekly · Last refresh Aug 30

CGI Group AI Engineer Interview Questions

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

25questions
~4htotal time
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1
System DesignStart here. 3 questions · ~26 min
Design an LLM Serving PlatformHard

Design an LLM serving system that balances latency, cost, scalability, and safety for production traffic.

Cold StartFeature StoreModel ServingCGI Group
Deploy a Personalized Ranking ModelMedium

Design a production deployment path for a personalized ranking model, with serving, feature consistency, drift handling, and experiment driven rollout.

InfrastructureFeature DriftModel ServingCGI Group
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2
Generative AI & LLMs4 questions · ~35 min
Ethics in Generative AI DeploymentMedium

Discuss the main ethical risks in deploying generative AI, including hallucination, misuse, privacy, and governance.

HallucinationPrompt InjectionLLM EvaluationCGI Group
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3
Machine Learning5 questions · ~44 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffCGI Group
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4
Behavioral & Leadership7 questions · ~61 min
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5
More topics6 questions · ~53 min
Logistic Regression From ScratchHard
Practice

Implement batch logistic regression with a stable sigmoid, L2 regularization, and gradient descent for CircleUp classification signals.

MathArraysGradient DescentCGI Group
Explain a RAG SystemMedium

Explain how RAG combines retrieval and generation to produce grounded answers from a document collection.

Vector SearchLanguage ModelsPrompt EngineeringCGI Group
Model Performance EvaluationEasy

Tests your ability to select metrics, validation strategy, and interpret results for ML models.

PrecisionAccuracyRecallCGI Group
Debugging a Machine Learning PipelineMedium

Tests your ability to diagnose failures across data, training, and deployment stages in ML systems.

ETLDependenciesQualityCGI Group
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