Cognizant
American multinational information technology services and consulting company.
4 Rounds
~21 Days
Medium
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Machine Learning Engineer
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Coding
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medium
Write a Python script using PyTorch or TensorFlow to define a simple Convolutional Neural Network (CNN) for image classification.
#Python
#PyTorch
#TensorFlow
#CNNs
Machine Learning Engineer
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Technical
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medium
Explain the vanishing gradient problem in Deep Learning. How do modern architectures solve it?
#Neural Networks
#Activation Functions
#Backpropagation
Machine Learning Engineer
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Technical
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hard
How does Self-Attention work in a Transformer model?
#NLP
#Transformers
#Attention Mechanism
Machine Learning Engineer
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Technical
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hard
What are LLM hallucinations, and what specific techniques would you implement to mitigate them in a production enterprise application?
#Generative AI
#LLMs
#Prompt Engineering
Machine Learning Engineer
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Technical
•
medium
Compare Word2Vec and BERT embeddings. What are the fundamental differences in how they represent words?
#NLP
#Embeddings
#BERT
Difficulty Radar
Based on recent AI-sourced data.
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The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Always explain your thought process before writing code or drawing architecture.