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Ernst & Young Oman Machine Learning Engineer Interview Questions

The questions to prepare for a Ernst & Young Oman Machine Learning Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
NLPStart here. 6 questions · ~48 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 LearningErnst & Young Oman
Fine Tune an LLMHard

Describe how to fine-tune a large language model for a client-specific NLP task, from data prep to evaluation.

Language ModelsText ClassificationTokenizationErnst & Young Oman
Compare Transformers to RNNs and CNNsMedium

Explain how Transformers differ from RNNs and CNNs for sequence modeling and why self-attention changes training and inference.

Neural NetworksLanguage ModelsDeep LearningErnst & Young Oman
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2
System Design5 questions · ~40 min
Design a Low Latency RAG PlatformHard

Design a low latency RAG system over millions of documents, with scalable retrieval, ranking, generation, and production monitoring.

low latencyscalabilityRAG architectureErnst & Young Oman
Design Edge Versus Cloud InferenceMedium

Compare how you would deploy deep learning inference on edge devices versus cloud systems, including architecture, tradeoffs, and operational risks.

Deep Learningcloud infrastructureedge devicesErnst & Young Oman
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingErnst & Young Oman
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3
Machine Learning12 questions · ~96 min
L1 vs L2 RegularizationMedium

Explain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.

Feature EngineeringRegularizationSupervised LearningErnst & Young Oman
Handle Highly Imbalanced ClassesMedium

Build a classifier for a highly imbalanced dataset and choose training and evaluation methods that surface rare positives.

Cross-ValidationFeature EngineeringSupervised LearningErnst & Young Oman
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4
More topics1 question · ~8 min
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