HCLTech

Global IT services and consulting company.

4 Rounds ~21 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 medium

Build a custom useFetch hook in React that handles loading states, errors, caching, and aborts the request if the component unmounts.

#Custom Hooks #API Integration #Cleanup Functions
Frontend Engineer Coding medium

Implement a paginated data table component in React that fetches data per page. Include next/prev buttons and loading states.

#Component Design #Pagination #State Management
Frontend Engineer Coding hard

Implement an autocomplete search bar component. It must fetch suggestions from an API, debounce the input, and cancel pending requests if the user keeps typing.

#UI Components #Debouncing #API Cancellation
Frontend Engineer Technical medium

What is the exact difference between useMemo and useCallback? Provide a real-world scenario where misusing them degrades performance.

#React Hooks #Performance Optimization #Memoization
Frontend Engineer Technical hard

Explain how React's Virtual DOM and the Reconciliation algorithm (Fiber) work under the hood.

#Virtual DOM #React Fiber #Reconciliation
Frontend Engineer Technical medium

How do you handle complex asynchronous side effects in Redux? Compare Redux Thunk and Redux Saga.

#Redux #Middleware #Asynchronous Programming
Frontend Engineer Technical medium

What are Higher-Order Components (HOCs)? How do they compare to Custom Hooks, and when would you still use an HOC today?

#Design Patterns #HOC #Custom Hooks

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.

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Unwritten Rules

Think Out Loud

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

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