TCS

Large multinational IT services and consulting enterprise based in India.

3 Rounds ~14 Days Medium

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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

All Roles Backend Engineer 6 Cloud Engineer 7 Data Engineer 6 Data Scientist 4 DevOps Engineer 2 Frontend Engineer 5 Full Stack Engineer 5 Machine Learning Engineer 5 Product Manager 5 Software Engineer 5

All Topics System Design 7 Scripting 3 CI/CD 2 Infrastructure as Code 2 Container Orchestration 2 Cloud Networking 2 Best Practices 1 Communication 1

Cloud Engineer • System Design • hard

Design a highly available, fault-tolerant 3-tier web application architecture on AWS for a global e-commerce client expecting massive traffic spikes during Black Friday.

#AWS #High Availability #Scalability #Architecture

Practice

Cloud Engineer • System Design • medium

Design a serverless data processing pipeline on GCP or AWS that triggers when a CSV file is uploaded, validates the data, and loads it into a data warehouse.

#Serverless #Data Pipeline #Event-Driven Architecture

Practice

Cloud Engineer • System Design • hard

A healthcare client requires a Disaster Recovery (DR) setup with an RPO of 15 minutes and an RTO of 1 hour. How would you design this across two cloud regions?

#Disaster Recovery #RTO/RPO #Architecture

Practice

Cloud Engineer • System Design • medium

Design a centralized logging and monitoring solution for a hybrid cloud environment (on-premise VMs and Azure AKS).

#Observability #Logging #Hybrid Cloud

Practice

Cloud Engineer • System Design • hard

A TCS client has a monthly AWS bill of $500,000 and wants to reduce it by 20%. Walk me through your architectural and operational approach to Cloud Cost Optimization (FinOps).

#FinOps #Cost Optimization #AWS

Practice

Cloud Engineer • System Design • hard

How would you design a zero-downtime database migration from an on-premise Oracle database to Amazon Aurora PostgreSQL?

#Database Migration #AWS DMS #Zero Downtime

Practice

Cloud Engineer • System Design • medium

Design an authentication and authorization flow for a microservices-based application using API Gateway and Identity Providers.

#Security #Microservices #OAuth/OIDC

Practice

Difficulty Radar

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Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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Unwritten Rules

Think Out Loud

Always explain your thought process before writing code or drawing architecture.

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