TCS

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

Frontend Engineer • Coding • hard

Implement a custom Promise.all() polyfill.

#Promises #Asynchronous JavaScript #Polyfills
Practice
Frontend Engineer • Coding • hard

Write a function to deep clone a nested JavaScript object. How would you modify it to handle circular references?

#Objects #Recursion #Memory Management
Practice
Frontend Engineer • Coding • medium

Implement a debounce function from scratch. How does it differ from throttling, and when would you use each?

#Performance #Higher-Order Functions #DOM Events
Practice
Frontend Engineer • Technical • easy

What is the difference between '==' and '===' in JavaScript? How does type coercion work under the hood?

#Type Coercion #Equality #Fundamentals
Practice
Frontend Engineer • Technical • medium

Explain prototypal inheritance in JavaScript. How do ES6 classes differ from traditional constructor functions under the hood?

#Prototypes #OOP #ES6
Practice
Frontend Engineer • Technical • medium

How does the 'this' keyword work in JavaScript? Explain how its behavior changes between regular functions, arrow functions, and event listeners.

#Context #Arrow Functions #Execution Context
Practice
Frontend Engineer • Technical • medium

Explain the event loop in JavaScript. What will be the output of a script containing synchronous logs, a setTimeout, and a Promise.resolve().then()?

#Event Loop #Microtasks #Macrotasks
Practice
Frontend Engineer • Technical • easy

What are closures in JavaScript? Provide a real-world use case where you would use a closure in an enterprise application.

#Closures #Scope #Lexical Environment
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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