Capgemini

Global leader in partnering with companies to transform and manage their business by harnessing the power of technology.

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

All Roles Backend Engineer 35 Cloud Engineer 35 Data Engineer 35 Data Scientist 35 DevOps Engineer 35 Frontend Engineer 35 Full Stack Engineer 35 Machine Learning Engineer 35 Product Manager 35 Software Engineer 35

All Topics System Design 6 Backend 6 Algorithms 5 Frontend 5 Database 3 Leadership 3 Cloud/DevOps 2 Culture Fit 2

Full Stack Engineer • Behavioral • medium

Tell me about a time you had a disagreement with a client regarding technical requirements. How did you handle it?

#Communication #Client Management #Conflict Resolution

Practice

Full Stack Engineer • Behavioral • medium

How do you handle scope creep when a client requests new features during an active Agile sprint?

#Agile #Project Management #Client Management

Practice

Full Stack Engineer • Behavioral • easy

Describe a situation where you had to learn a new technology or framework very quickly to deliver a project.

#Adaptability #Continuous Learning

Practice

Full Stack Engineer • Behavioral • hard

Tell me about a critical production outage you were involved in. What was your role in resolving it?

#Incident Management #Problem Solving #Under Pressure

Practice

Full Stack Engineer • Behavioral • medium

As a Full Stack Engineer, how do you ensure high code quality and maintainability within your development team?

#Code Quality #Mentorship #Best Practices

Practice

Full Stack 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

Full Stack Engineer • Coding • medium

Find the length of the longest substring without repeating characters.

#Strings #Sliding Window #Hash Set

Practice

Full Stack Engineer • Coding • medium

Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals.

#Arrays #Sorting

Practice

Full Stack Engineer • Coding • easy

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

#Strings #Stack

Practice

Full Stack Engineer • Coding • easy

Reverse a singly linked list.

#Linked Lists #Pointers

Practice

Full Stack Engineer • Coding • medium

Implement a debounce function in JavaScript that limits the rate at which a function can fire.

#JavaScript #Closures #Timers

Practice

Full Stack Engineer • System Design • hard

Design a microservices architecture for an e-commerce platform. How would you handle service discovery and API routing?

#Microservices #Architecture #API Gateway

Practice

Full Stack Engineer • System Design • medium

How would you implement authentication and authorization across multiple microservices?

#Security #Microservices #JWT

Practice

Full Stack Engineer • System Design • hard

Explain the Saga design pattern. How do you handle distributed transactions across multiple microservices?

#Distributed Systems #Microservices #Transactions

Practice

Full Stack Engineer • System Design • medium

Design a URL Shortener service like Bitly. Focus on the database schema and the URL generation algorithm.

#Scalability #Hashing #Database Design

Practice

Full Stack Engineer • System Design • medium

How do you handle rate limiting in a public-facing API to prevent abuse?

#API Gateway #Security #Algorithms

Practice

Full Stack Engineer • System Design • hard

Design a real-time chat application like Microsoft Teams. How do you ensure messages are delivered in real-time?

#WebSockets #Real-time #Scalability

Practice

Full Stack Engineer • Technical • easy

Explain the difference between React Hooks and Class Components. Why did React introduce Hooks?

#React #Architecture

Practice

Full Stack Engineer • Technical • medium

How does the Virtual DOM work in React, and how does the reconciliation process (Diffing algorithm) optimize rendering?

#React #Performance #DOM

Practice

Full Stack Engineer • Technical • medium

Explain the Redux data flow. When would you choose Redux over the native React Context API?

#React #State Management #Redux

Practice

Full Stack Engineer • Technical • hard

What strategies would you use to optimize a slow-loading enterprise React or Angular application?

#Performance #Web Vitals #Lazy Loading

Practice

Full Stack Engineer • Technical • medium

What is CORS? How do you resolve CORS issues between a React frontend and a Spring Boot backend?

#CORS #HTTP #Spring Boot

Practice

Full Stack Engineer • Technical • hard

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

#Java #Concurrency #Data Structures

Practice

Full Stack Engineer • Technical • easy

What is the difference between @Controller and @RestController in Spring Boot?

#Spring Boot #REST

Practice

Full Stack Engineer • Technical • medium

How do you handle exceptions globally in a Spring Boot REST API?

#Spring Boot #Error Handling

Practice

Full Stack Engineer • Technical • medium

Explain the Node.js Event Loop. How can Node.js handle thousands of concurrent requests if it is single-threaded?

#Node.js #Asynchronous Programming #Architecture

Practice

Full Stack Engineer • Technical • easy

What are the different bean scopes available in the Spring framework?

#Spring #Dependency Injection

Practice

Full Stack Engineer • Technical • medium

How does Garbage Collection work in Java? Can you force garbage collection?

#Java #Memory Management

Practice

Full Stack Engineer • Technical • hard

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

#Hibernate #JPA #Performance

Practice

Full Stack Engineer • Technical • medium

Write a SQL query to find the second highest salary of an employee from an Employee table.

#SQL #Subqueries

Practice

Full Stack Engineer • Technical • medium

Explain the difference between clustered and non-clustered indexes in a relational database.

#SQL #Indexing #Performance

Practice

Full Stack Engineer • Technical • medium

What are ACID properties? How are they implemented in a relational database?

#RDBMS #Transactions

Practice

Full Stack Engineer • Technical • medium

What are the key differences between monolithic and microservices architectures? When would you choose a monolith over microservices?

#Monolith #Microservices #Trade-offs

Practice

Full Stack Engineer • Technical • medium

Explain your typical deployment strategy using Docker and Kubernetes. What are Pods and Deployments?

#Docker #Kubernetes #Deployment

Practice

Full Stack Engineer • Technical • medium

Walk me through how you would set up a CI/CD pipeline for a full-stack application.

#CI/CD #Jenkins #GitLab CI

Practice

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Senior Engineer

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

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Think Out Loud

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

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