Wipro

Wipro

Global information technology, consulting and business process services 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 • Behavioral • medium

Tell me about a time you had to push back on a client's unrealistic deadline during a sprint.

#Client Communication #Agile #Conflict Resolution
Practice
Frontend Engineer • Behavioral • medium

Tell me about a time you had to collaborate with a difficult onshore counterpart or stakeholder across different time zones.

#Communication #Global Teams #Conflict Resolution
Practice
Frontend Engineer • Behavioral • easy

Tell me about a time you had to learn a completely new technology or framework quickly to deliver a client project at Wipro.

#Adaptability #Continuous Learning #Delivery
Practice
Frontend Engineer • Behavioral • medium

Describe a situation where you found a significant bug in production. How did you troubleshoot it, fix it, and prevent it from happening again?

#Debugging #Incident Management #Process Improvement
Practice
Frontend Engineer • Coding • medium

Write a polyfill for Array.prototype.reduce from scratch.

#JavaScript Core #Polyfills #Higher Order Functions
Practice
Frontend Engineer • Coding • medium

Implement a debounce function in JavaScript. How would you modify it to execute immediately on the first call?

#Closures #Performance Optimization #DOM Events
Practice
Frontend Engineer • Coding • medium

Write a function to flatten a deeply nested array of integers without using Array.prototype.flat().

#Recursion #Data Structures #Arrays
Practice
Frontend Engineer • Coding • medium

Implement a custom React hook 'useFetch' that takes a URL and returns data, loading state, and error state, while handling component unmounting.

#Custom Hooks #API Integration #Lifecycle Management
Practice
Frontend Engineer • Coding • medium

Write a JavaScript function to check if two deeply nested objects are equal.

#Recursion #Object Manipulation #Data Structures
Practice
Frontend Engineer • Coding • hard

Implement a function 'promiseAllWithLimit(tasks, limit)' that takes an array of async tasks and executes them with a maximum concurrency of 'limit'.

#Promises #Concurrency #Asynchronous JS
Practice
Frontend Engineer • Coding • medium

Write a function to find the length of the longest substring without repeating characters.

#Sliding Window #Strings #Hash Map
Practice
Frontend Engineer • Coding • easy

Create a responsive layout using CSS Grid for a dashboard with a sidebar, header, main content area, and footer. The sidebar should collapse on mobile.

#CSS Grid #Responsive Design #Media Queries
Practice
Frontend Engineer • Coding • medium

Implement a simple Event Emitter (Pub/Sub) class in JavaScript with 'on', 'emit', and 'off' methods.

#Design Patterns #Classes #Event Handling
Practice
Frontend Engineer • Coding • easy

Write a function 'groupBy(array, property)' that takes an array of objects and groups them by a specific property.

#Array Methods #Data Manipulation #Objects
Practice
Frontend Engineer • System Design • medium

How do you handle state management in a large-scale React application for an enterprise banking client?

#React #Redux #Context API #State Management
Practice
Frontend Engineer • System Design • hard

Design a scalable data grid component that needs to render and sort 100,000 rows of financial data without crashing the browser.

#Virtualization #Performance #UI Components
Practice
Frontend Engineer • System Design • hard

A client wants to migrate a legacy AngularJS monolithic frontend to a modern stack. How would you architect a Micro-frontend solution for this?

#Micro-frontends #Architecture #Migration Strategy #Webpack Module Federation
Practice
Frontend Engineer • System Design • medium

Design an autocomplete search bar component. How do you handle network latency, caching, and rapid user typing?

#UI Components #Debouncing #Caching #API Design
Practice
Frontend Engineer • System Design • medium

Design a real-time notification system for a web application. Consider both the frontend architecture and how it communicates with the backend.

#WebSockets #Server-Sent Events #State Management
Practice
Frontend Engineer • System Design • hard

How would you design the frontend architecture for a real-time collaborative document editor (like Google Docs)?

#Operational Transformation #WebSockets #Complex UI
Practice
Frontend Engineer • System Design • medium

Design an image carousel/slider component. What edge cases and performance aspects would you consider?

#UI Components #Accessibility #Performance
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 #Asynchronous JS #Microtasks #Macrotasks
Practice
Frontend Engineer • Technical • easy

Explain the difference between useMemo and useCallback in React. Provide a real-world scenario where using them actually hurts performance.

#React Hooks #Performance Optimization #Memoization
Practice
Frontend Engineer • Technical • medium

Explain CSS Specificity. How do you structure and scope CSS in a large enterprise project to avoid conflicts?

#CSS #BEM #CSS-in-JS #CSS Modules
Practice
Frontend Engineer • Technical • hard

What are Web Workers? How would you implement one to parse a massive JSON payload from a Wipro backend service without freezing the UI?

#Web Workers #Multithreading #Performance
Practice
Frontend Engineer • Technical • medium

Describe your approach to ensuring a web application meets WCAG 2.1 AA accessibility standards for a government client.

#Accessibility #A11y #Semantic HTML #ARIA
Practice
Frontend Engineer • Technical • hard

How do you measure and optimize Core Web Vitals (LCP, FID, CLS) for a client's e-commerce landing page?

#Core Web Vitals #Optimization #Lighthouse
Practice
Frontend Engineer • Technical • medium

Explain the difference between Observables and Promises in Angular. When would you choose one over the other?

#RxJS #Angular #Asynchronous Programming
Practice
Frontend Engineer • Technical • medium

What is the Virtual DOM and how does React's reconciliation algorithm (Fiber) work under the hood?

#React Core #Virtual DOM #Reconciliation
Practice
Frontend Engineer • Technical • medium

How do you identify and prevent memory leaks in a Single Page Application (SPA)?

#Memory Management #Performance #Debugging
Practice
Frontend Engineer • Technical • medium

Explain Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF). How do you secure a frontend application against them?

#Web Security #XSS #CSRF #CORS
Practice
Frontend Engineer • Technical • easy

How do TypeScript's 'Omit' and 'Pick' utility types work? Provide a practical example of when you would use them in a React component.

#TypeScript #Utility Types #Type Safety
Practice
Frontend Engineer • Technical • easy

Explain the concept of closures in JavaScript. Provide a practical use case where a closure is necessary.

#Closures #Scope #Lexical Environment
Practice
Frontend Engineer • Technical • medium

How do you handle authentication and authorization (e.g., JWT, OAuth) in a React or Angular application? Where do you store the tokens?

#Authentication #JWT #Security #Cookies
Practice
Frontend Engineer • Technical • medium

Explain Server-Side Rendering (SSR) vs Static Site Generation (SSG) in Next.js. Which would you choose for a client's public blog versus a private dashboard?

#Next.js #SSR #SSG #Architecture
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.

Practice Now