Infosys
Global leader in next-generation digital services and consulting.
3 Rounds
~14 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
Data Scientist
•
Coding
•
easy
Write a Python script to perform a cross-validation on a dataset using Scikit-Learn, and explain why cross-validation is preferred over a simple train-test split.
#Python
#Scikit-Learn
#Cross-Validation
Data Scientist
•
System Design
•
hard
Design a recommendation system for an e-commerce client to suggest products based on user browsing history and past purchases.
#Collaborative Filtering
#Content-Based Filtering
#Matrix Factorization
Data Scientist
•
Technical
•
medium
Explain the difference between Random Forest and Gradient Boosting. Which one would you prefer for predicting client churn for a telecom client and why?
#Ensemble Methods
#Bagging
#Boosting
#Classification
Data Scientist
•
Technical
•
medium
How do you handle highly imbalanced datasets in a fraud detection model for a banking client? What metrics would you use?
#Imbalanced Data
#SMOTE
#Precision-Recall
#F1-Score
Data Scientist
•
Technical
•
medium
What is the curse of dimensionality, and how do you address it when working with high-dimensional enterprise data?
#PCA
#Feature Selection
#Dimensionality Reduction
Data Scientist
•
Technical
•
hard
Explain the mathematical intuition behind Support Vector Machines (SVM). What is the kernel trick and when do you use it?
#SVM
#Mathematics
#Kernels
Data Scientist
•
Technical
•
medium
Explain L1 and L2 regularization. When would you use Lasso over Ridge regression in a predictive maintenance model?
#Regularization
#Regression
#Feature Selection
Data Scientist
•
Technical
•
medium
What is the difference between K-Means and Hierarchical clustering? How do you determine the optimal number of clusters?
#Clustering
#Unsupervised Learning
#Elbow Method
#Silhouette Score
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.