Top 29
Prep plan
Updated weekly · Last refresh Aug 30

BNSF Railway AI Engineer Interview Questions

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

29questions
~5htotal time
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1
CodingStart here. 7 questions · ~69 min
BFS Shortest Path CodingEasy
Practice

Use BFS to return the shortest route between two BNSF locations in an unweighted rail graph.

QueueSearchingGraphsBNSF Railway
Reverse a Linked ListEasy
Practice

Reverse a singly linked list in place using pointer manipulation.

RecursionLinked ListsBNSF Railway
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2
Machine Learning4 questions · ~40 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 TradeoffBNSF Railway
Describe an ML Project You BuiltMedium

Describe a machine learning project, from problem framing and feature work to model training and evaluation.

Cross-ValidationFeature EngineeringSupervised LearningBNSF Railway
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3
Generative AI & LLMs3 questions · ~30 min
Reduce Hallucinations in LLM AnswersEasy

Explain LLM hallucination and give three practical ways to reduce it using grounding, prompting, and evaluation.

HallucinationPrompt EngineeringRAGBNSF Railway
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4
Model Evaluation3 questions · ~30 min
Approach to Underperforming ModelsMedium

Structured approach for diagnosing an underperforming model and deciding whether to fix data, thresholding, calibration, or the model.

PrecisionAccuracyRecallBNSF Railway
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5
System Design4 questions · ~40 min
Design an LLM Serving PlatformHard

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

Cold StartFeature StoreModel ServingBNSF Railway
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6
Behavioral & Leadership7 questions · ~69 min
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7
More topics1 question · ~10 min
Spark Data Pipeline TransformationsMedium

Assesses Spark skills for joining data and engineering features for downstream AI systems.

data processingsparkBNSF Railway
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