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
Data Scientist
•
System Design
•
hard
A healthcare client wants a chatbot to query their internal medical guidelines. Design a Retrieval-Augmented Generation (RAG) pipeline for this.
#RAG
#LLMs
#Vector Databases
#NLP
Data Scientist
•
Technical
•
hard
You need to adapt an open-source LLM (e.g., Llama 3) to understand specific legal jargon for a client. What fine-tuning approach would you use given limited compute resources?
#Fine-tuning
#PEFT
#LoRA
#LLMs
Data Scientist
•
Technical
•
medium
How do you evaluate the performance of a Generative AI model tasked with summarizing client meeting transcripts?
#Evaluation Metrics
#NLP
#Summarization
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.