Tech Mahindra
Multinational IT services and consulting company.
4 Rounds
~21 Days
Medium
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
Full Stack Engineer
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Behavioral
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medium
Tell me about a time you had a disagreement with a client regarding technical requirements. How did you resolve it?
#Communication
#Conflict Resolution
#Client Management
Full Stack Engineer
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Behavioral
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medium
Describe a situation where you had to deliver a critical project under a very tight deadline.
#Time Management
#Stress Management
Full Stack Engineer
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Behavioral
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medium
How do you handle a situation where a production deployment fails in a client environment?
#Incident Management
#Accountability
Full Stack Engineer
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Behavioral
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easy
Tell me about a time you had to learn a new technology stack quickly to meet project needs.
#Learning
#Flexibility
Full Stack Engineer
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Behavioral
•
medium
How do you ensure code quality and mentor junior developers in a distributed agile team?
#Mentorship
#Agile
#Code Quality
Full Stack Engineer
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Coding
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easy
Write a function to check if a given string containing brackets is valid (Valid Parentheses).
#Stacks
#Strings
Full Stack Engineer
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Coding
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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
Full Stack Engineer
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Coding
•
medium
Write a SQL query to find the nth highest salary from an Employee table.
#Database
#SQL Queries
Full Stack Engineer
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Coding
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medium
Implement a debounce function in JavaScript that limits the rate at which a function can fire.
#JavaScript
#Closures
#Asynchronous Programming
Full Stack Engineer
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Coding
•
medium
Write a Java Stream API snippet to group a list of Employee objects by their department name and count the number of employees in each.
#Java
#Stream API
#Collections
Full Stack Engineer
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Coding
•
medium
Find the longest substring without repeating characters in a given string.
#Strings
#Sliding Window
Full Stack Engineer
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Coding
•
medium
Given a collection of intervals, merge all overlapping intervals.
#Arrays
#Sorting
Full Stack Engineer
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Coding
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easy
Reverse a singly linked list.
#Linked Lists
#Pointers
Full Stack Engineer
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Coding
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hard
Detect a cycle in a directed graph.
#Graphs
#DFS
Full Stack Engineer
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Coding
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easy
Find the first non-repeating character in a string and return its index.
#Strings
#Hash Table
Full Stack Engineer
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System Design
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hard
Design a telecom billing system that processes millions of call detail records (CDRs) daily.
#Architecture
#Batch Processing
#Scalability
Full Stack Engineer
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System Design
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medium
Design a URL shortener service like Bitly.
#Architecture
#Hashing
#Databases
Full Stack Engineer
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System Design
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hard
How would you design a microservices architecture for an e-commerce platform?
#Microservices
#API Gateway
#Databases
Full Stack Engineer
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System Design
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medium
Explain the Circuit Breaker pattern and how you would implement it using Resilience4j.
#Microservices
#Fault Tolerance
Full Stack Engineer
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System Design
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hard
Design a scalable notification system (Email, SMS, Push) for a banking client.
#Architecture
#Message Queues
#Third-party Integration
Full Stack Engineer
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Technical
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medium
Explain the internal working of ConcurrentHashMap in Java and how it differs from a synchronized HashMap.
#Java
#Concurrency
#Data Structures
Full Stack Engineer
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Technical
•
medium
How does Spring Boot auto-configuration work under the hood?
#Spring Boot
#Frameworks
Full Stack Engineer
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Technical
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easy
What is the difference between @Controller and @RestController in Spring?
#Spring Boot
#REST APIs
Full Stack Engineer
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Technical
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hard
Explain the Saga design pattern. How do you handle distributed transactions across microservices?
#Distributed Systems
#Design Patterns
Full Stack Engineer
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Technical
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medium
How do you handle exceptions globally in a Spring Boot REST API?
#Spring Boot
#Error Handling
Full Stack Engineer
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Technical
•
medium
What is the N+1 select problem in Hibernate, and how do you solve it?
#Hibernate
#ORM
#SQL
Full Stack Engineer
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Technical
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medium
Explain the difference between process.nextTick() and setImmediate() in Node.js.
#Node.js
#Event Loop
Full Stack Engineer
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Technical
•
medium
How do you secure a REST API using JWT? Explain the authentication and authorization flow.
#JWT
#Authentication
#REST APIs
Full Stack Engineer
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Technical
•
medium
What are the differences between RabbitMQ and Apache Kafka? When would you choose one over the other?
#Message Brokers
#Kafka
#RabbitMQ
Full Stack Engineer
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Technical
•
easy
Explain Dependency Injection and its types in the Spring framework.
#Spring
#Design Patterns
Full Stack Engineer
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Technical
•
medium
Explain the Virtual DOM in React and how the reconciliation algorithm works.
#React
#Architecture
Full Stack Engineer
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Technical
•
medium
What are React Hooks? Explain the useEffect hook with an example of a cleanup function.
#React
#Hooks
#Lifecycle
Full Stack Engineer
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Technical
•
medium
How does Angular's Dependency Injection differ from React's Context API?
#Angular
#React
#Architecture
Full Stack Engineer
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Technical
•
medium
Explain closures in JavaScript and provide a practical use case.
#JavaScript
#Core Concepts
Full Stack Engineer
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Technical
•
medium
How do you manage state in a large-scale React application?
#React
#State Management
#Redux
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.