Wipro

Wipro

Global information technology, consulting and business process services 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

Backend Engineer • Behavioral • medium

Tell me about a time you had to deliver a critical project under a very tight deadline for a client. How did you prioritize your tasks?

#Time Management #Client Delivery #Prioritization
Practice
Backend Engineer • Behavioral • medium

Describe a situation where you disagreed with a senior architect's technical decision. How did you handle it?

#Conflict Resolution #Communication #Professionalism
Practice
Backend Engineer • Behavioral • medium

How do you ensure code quality and standard compliance when working with a globally distributed team?

#Code Quality #Teamwork #Agile
Practice
Backend Engineer • Behavioral • easy

Tell me about a time you had to learn a completely new technology or framework to fulfill a client requirement.

#Adaptability #Continuous Learning
Practice
Backend Engineer • Coding • medium

Given a list of employees, write a Java 8 Stream API snippet to find the second highest salary.

#Java 8 #Streams #Lambdas #Collections
Practice
Backend Engineer • Coding • medium

Write a SQL query to find the Nth highest salary from an Employee table without using the LIMIT keyword.

#SQL #Subqueries #Database
Practice
Backend Engineer • Coding • easy

Given the head of a linked list, determine if it has a cycle in it.

#Linked List #Two Pointers
Practice
Backend Engineer • Coding • medium

Given an array of strings, group the anagrams together.

#Arrays #Strings #Hash Table
Practice
Backend Engineer • Coding • medium

Given a string, find the length of the longest substring without repeating characters.

#Strings #Sliding Window #Hash Set
Practice
Backend Engineer • Coding • easy

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.

#Arrays #Hash Table
Practice
Backend Engineer • Coding • easy

Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

#Strings #Stack
Practice
Backend Engineer • Coding • easy

Write a Java program to reverse a string without using any built-in reverse functions.

#Strings #Loops
Practice
Backend Engineer • Coding • easy

Given two sorted integer arrays, merge them into a single sorted array without using extra space (if modifying in place) or in O(N+M) time.

#Arrays #Two Pointers
Practice
Backend Engineer • System Design • medium

Design a URL Shortener service (like bit.ly). Focus on the database schema and the URL generation algorithm.

#Scalability #Hashing #Database Design
Practice
Backend Engineer • System Design • hard

Design an e-commerce checkout system handling high concurrent traffic during a flash sale.

#High Availability #Concurrency #Message Queues #Caching
Practice
Backend Engineer • System Design • hard

Design a centralized logging and monitoring system for a distributed microservices architecture.

#Observability #Logging #ELK #Prometheus
Practice
Backend Engineer • System Design • medium

How would you design a scalable notification system (Email, SMS, Push) for a large banking client?

#Message Queues #Third-party APIs #Scalability
Practice
Backend Engineer • Technical • medium

Explain the internal working of ConcurrentHashMap in Java. How does it differ from a synchronized HashMap?

#Multithreading #Data Structures #Concurrency
Practice
Backend Engineer • Technical • medium

How exactly does Spring Boot Auto-configuration work under the hood?

#Spring Boot #Annotations #Framework Internals
Practice
Backend Engineer • Technical • medium

How do you handle exceptions globally in a Spring Boot REST API to ensure consistent error responses for the client?

#REST API #Exception Handling #Spring MVC
Practice
Backend Engineer • Technical • medium

In a microservices architecture, how do you handle communication between services? When would you choose synchronous over asynchronous?

#Architecture #REST #Messaging #Kafka #RabbitMQ
Practice
Backend Engineer • Technical • hard

Explain the Saga Design Pattern. How would you implement distributed transactions across multiple microservices?

#Microservices #Distributed Systems #Transactions
Practice
Backend Engineer • Technical • hard

What is the N+1 select problem in Hibernate/JPA, and how do you resolve it?

#Hibernate #JPA #Database Performance
Practice
Backend Engineer • Technical • medium

How do you secure a REST API? Explain the difference between OAuth2 and JWT.

#Authentication #Authorization #JWT #OAuth2
Practice
Backend Engineer • Technical • medium

Explain the Bean lifecycle in the Spring framework.

#Spring Core #IoC #Lifecycle
Practice
Backend Engineer • Technical • hard

How does Garbage Collection work in Java? Specifically, explain how the G1 Garbage Collector operates.

#JVM #Garbage Collection #Performance Tuning
Practice
Backend Engineer • Technical • medium

What is an API Gateway? Why is it necessary in a microservices architecture?

#API Gateway #Routing #Security #Architecture
Practice
Backend Engineer • Technical • medium

What is the difference between clustered and non-clustered indexes in a relational database?

#Database #Indexing #Performance
Practice
Backend Engineer • Technical • medium

How do you implement thread safety in a Singleton class in Java?

#Design Patterns #Multithreading #Singleton
Practice
Backend Engineer • Technical • medium

When would you choose a NoSQL database like MongoDB over a relational database like PostgreSQL?

#NoSQL #SQL #System Design
Practice
Backend Engineer • Technical • medium

How do you handle rate limiting in a Spring Boot application?

#API Gateway #Resilience4j #Security
Practice
Backend Engineer • Technical • easy

What is the difference between @Component, @Service, and @Repository annotations in Spring?

#Spring Core #Annotations
Practice
Backend Engineer • Technical • medium

Explain the internal working of HashSet in Java.

#Collections #Data Structures
Practice
Backend Engineer • Technical • medium

What are the new features introduced in Java 11 and Java 17 that you have utilized in your projects?

#Java 11 #Java 17 #Modern Java
Practice
Backend Engineer • Technical • medium

Explain the ACID properties. How does a relational database ensure Durability?

#SQL #Transactions #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.

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