HCLTech

Global IT services and consulting company.

4 Rounds ~21 Days Medium
Start Mock Interview

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 • medium

Implement a polyfill for Promise.all().

#Promises #Asynchronous Programming #Polyfills
Practice
Frontend Engineer • Coding • medium

Write a function to curry an existing function that takes 'n' arguments.

#Functional Programming #Currying #Closures
Practice
Frontend Engineer • Coding • medium

Write a custom debounce function from scratch that includes an 'immediate' execution flag.

#Closures #Timers #Performance Optimization
Practice
Frontend Engineer • Coding • easy

Explain closures in JavaScript. Write a function that generates a private counter that cannot be accessed directly from the outside.

#Closures #Encapsulation #Scope
Practice
Frontend Engineer • Coding • hard

Write a function to deep clone a nested JavaScript object. How would you handle cyclic dependencies?

#Recursion #Data Structures #Memory Management
Practice
Frontend Engineer • Technical • medium

Explain prototype chaining in JavaScript. How would you implement class inheritance using ES5 syntax?

#Prototypes #OOP #ES5
Practice
Frontend Engineer • Technical • medium

Explain the JavaScript Event Loop. What will be the output of a script containing synchronous logs, setTimeout, and Promise.then() calls?

#Event Loop #Microtasks #Macrotasks
Practice
Full Stack Engineer • Technical • medium

Explain the Event Loop in JavaScript. How do Microtasks and Macrotasks differ?

#Asynchronous JS #Event Loop #Promises
Practice
Full Stack Engineer • Technical • easy

What is the difference between call(), apply(), and bind() in JavaScript? Provide a use case for each.

#Functions #Context #this keyword
Practice
Full Stack Engineer • Technical • medium

How do closures work in JavaScript? Can you provide a real-world scenario where you would use one?

#Closures #Scope #Lexical Environment
Practice

Difficulty Radar

Based on recent AI-sourced data.

Meet Your Interviewers

The "Standard" Interviewer

Senior Engineer

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

Simulate

Unwritten Rules

Think Out Loud

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

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