Top 50
Prep plan
Updated weekly · Last refresh Oct 17

Reply AI Engineer Interview Questions

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

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1
CodingStart here. 7 questions · ~66 min
Binary Tree Level Order TraversalEasy
Practice

Traverse a binary tree level by level using a queue-based breadth-first search.

QueueTreesReply
Design an LRU CacheEasy
Practice

Implement an LRU cache in O(1) average time using a hash table and doubly linked list.

Hash TablesQueueLinked ListsReply
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2
System Design13 questions · ~122 min
3
Generative AI & LLMs7 questions · ~66 min
Design a Multi-Tool AI AgentHard

Design a production agent platform that coordinates models, tools, and data sources under strict latency, cost, and safety limits.

Vector SearchPrompt EngineeringRAGReply
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4
Machine Learning8 questions · ~75 min
Fine-Tuning vs Prompted APIsMedium

Compare when to fine-tune a foundation model versus relying on prompt engineering with a managed API.

Trade-offsPrompt Engineeringmodel fine-tuningReply
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5
Model Evaluation4 questions · ~38 min
Choose Metrics for Imbalanced DataMedium

Choose the right evaluation metric for an imbalanced dataset and explain why accuracy can mislead.

F1 ScorePrecisionAUC-ROCReply
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6
Pipelines6 questions · ~56 min
Backfilling Missing Pipeline DataMedium

Approach for safely backfilling missing data while preserving correctness, idempotency, and data quality.

ETLQualityReply
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7
More topics5 questions · ~47 min
Explain Transformer Self-AttentionHard

Explain how transformer self-attention works, including its role in sequence modeling and why it scales better than RNNs.

Neural NetworksLanguage ModelsDeep LearningReply
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