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Updated weekly · Last refresh Oct 17

Factset AI Engineer Interview Questions

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

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1
Generative AI & LLMsStart here. 4 questions · ~41 min
RAG, Transformers, Fine-TuningHard

Design an end-to-end RAG pipeline with transformers, grounded generation, evaluation, and justified fine-tuning decisions.

transformersRAGFine-TuningFactset
Optimizing RAG PerformanceHard

Improve RAG quality, latency, and cost while controlling hallucinations and prompt injection.

Vector SearchPerformance Tuninginference optimizationFactset
Hallucination Evaluation StrategiesHard

Compare offline and online LLM evaluation strategies for detecting and reducing hallucinations in financial documentation.

HallucinationRAGLLM EvaluationFactset
Fine-Tuning vs PromptingHard

Explain when fine-tuning beats advanced prompting and embeddings, considering quality, cost, latency, maintenance, and safety.

Prompt Engineeringmodel fine-tuningmodel comparisonFactset
2
More topics4 questions · ~41 min
Caching LLM Calls for Dynamic QueriesHard
Practice

Build an LRU cache that reuses exact or semantically similar LLM responses while enforcing TTL and relevance thresholds.

deduplicationcachingcacheFactset
Cost-Efficient LLM ServingHard

Design an LLM serving platform that balances inference cost, latency, quality, reliability, and user experience.

inference latencyuser experienceModel ServingFactset
Evaluating LLMs in ProductionHard

Design a practical framework for comparing LLM quality, reliability, latency, cost, and safety in production.

performance evaluationevaluation metricsMetricsFactset
Pivoting After Unforeseen ConstraintsHard

Tests adaptability, prioritization, and ownership when technical constraints invalidate an original project strategy.

adaptabilityaccountabilitybehavioralFactset

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