Top 36
Prep plan
Updated weekly · Last refresh Aug 30

CGI AI Engineer Interview Questions

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

36questions
~6htotal time
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1
CodingStart here. 8 questions · ~83 min
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsCGI
Graph Traversal with BFS and DFSEasy
Practice

Traverse a graph from a start node using BFS and DFS, returning the visit order for each traversal.

StackQueueGraphsCGI
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2
Generative AI & LLMs5 questions · ~52 min
Approach LLM Fine-Tuning for TasksMedium

Explain a practical approach to fine-tuning an LLM for a specific task, including data, evaluation, and hallucination risks.

Prompt EngineeringLLM EvaluationFine-TuningCGI
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3
Model Evaluation5 questions · ~52 min
Improve Underperforming Model AccuracyMedium

Approach for diagnosing an underperforming model and improving accuracy through error analysis, feature work, tuning, and bias variance tradeoffs.

Cross-ValidationAccuracyThreshold TuningCGI
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4
System Design5 questions · ~52 min
Design Cold Start RecommendationsHard

Design a recommendation system strategy for new users and new items when interaction history is sparse or missing.

Cold StartFeature StoreRecommendation SystemsCGI
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5
Machine Learning3 questions · ~31 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
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6
Behavioral & Leadership7 questions · ~73 min
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7
More topics3 questions · ~31 min
Choose NLP Algorithms by TaskMedium

Explain how to choose practical NLP algorithms across tokenization, TF-IDF, embeddings, and text classification tasks.

Language ModelsTF-IDFTokenizationCGI
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCGI
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The finish line: interview-readyComplete all 36 questions to finish this plan.