Tech Mahindra Software Engineer Interview Questions + Guide in 2025

Tech Mahindra is a leading provider of digital transformation, consulting, and business re-engineering services and solutions.

As a Software Engineer at Tech Mahindra, you will be responsible for designing, developing, and maintaining software applications and systems. Key responsibilities include writing high-quality code, debugging and optimizing system performance, and collaborating with cross-functional teams to deliver innovative solutions. A strong proficiency in programming languages such as C and C++ is essential, along with a solid understanding of operating system concepts, data structures, and algorithms. Experience with debugging tools and familiarity with both Linux and Windows environments will set you apart. Ideal candidates should demonstrate a passion for technology, strong problem-solving skills, and the ability to thrive in a fast-paced environment that values innovation and collaboration.

This guide aims to empower you with targeted insights and preparation strategies for successfully navigating your interview process at Tech Mahindra.

The interview process for a Software Engineer at Tech Mahindra is structured to assess both technical and interpersonal skills, ensuring candidates are well-rounded and fit for the role. The process typically includes several key stages:

1. Resume Screening

The first step involves a thorough review of your resume by the recruitment team. They will look for relevant experience, educational background, and specific skills that align with the requirements of the Software Engineer role. This is your opportunity to showcase your technical expertise, particularly in programming languages like C and C++, as well as your understanding of operating systems.

2. Initial HR Call

Following a successful resume screening, candidates will have an initial phone interview with an HR representative. This call usually lasts about 30 minutes and focuses on your background, motivations for applying, and cultural fit within Tech Mahindra. Be prepared to discuss your career goals and how they align with the company's mission.

3. Technical Assessment

Candidates will then undergo a technical assessment, which may include a coding test. This test typically consists of multiple coding questions that evaluate your problem-solving abilities and proficiency in data structures and algorithms. Expect to solve problems related to arrays, strings, and linked lists, as well as demonstrate your understanding of object-oriented programming concepts.

4. Technical Interviews

After the coding assessment, candidates will participate in one or two technical interviews. These interviews are conducted by experienced engineers and focus on in-depth technical knowledge. You may be asked to explain concepts such as operating system internals, debugging techniques, and specific programming challenges. Be ready to discuss your past projects and the technologies you used, as well as to solve coding problems on the spot.

5. Behavioral or Managerial Interview

The final stage of the interview process is a behavioral or managerial interview. This round assesses your soft skills, teamwork, and how you handle challenges in a work environment. Expect situational questions that require you to reflect on past experiences and demonstrate your problem-solving and communication skills.

Throughout the interview process, it’s essential to convey your technical knowledge confidently while also showcasing your ability to work collaboratively within a team.

Next, let’s delve into the specific interview questions that candidates have encountered during their interviews at Tech Mahindra.

Here are some tips to help you excel in your interview.

Understand the Interview Process

The interview process at Tech Mahindra typically involves multiple rounds, including an initial HR call, a technical coding test, and several technical interviews. Familiarize yourself with this structure so you can prepare accordingly. Expect to explain challenging coding problems and discuss your past experiences in detail. Being aware of the process will help you manage your time and energy effectively.

Master Core Technical Concepts

Given the emphasis on C programming and operating system knowledge, ensure you have a solid grasp of these areas. Be prepared to answer questions related to operating system internals, memory management, and debugging techniques. Brush up on Object-Oriented Programming (OOP) concepts, as they are frequently discussed. Additionally, practice coding problems that involve data structures and algorithms, as these are common in technical interviews.

Prepare for Behavioral Questions

Tech Mahindra values candidates who can articulate their problem-solving processes and teamwork experiences. Be ready to share specific examples of challenges you've faced in coding projects and how you overcame them. Use the STAR (Situation, Task, Action, Result) method to structure your responses, making it easier for interviewers to follow your thought process.

Showcase Your Projects

Be prepared to discuss your projects in detail, especially those that highlight your technical skills and problem-solving abilities. Explain the technologies you used, the challenges you faced, and the outcomes of your projects. This not only demonstrates your technical expertise but also your ability to apply your knowledge in real-world scenarios.

Emphasize Adaptability and Learning

Tech Mahindra looks for candidates who are eager to learn and adapt to new technologies. Be ready to discuss how you keep your skills updated and how quickly you can learn new programming languages or tools. This will show your potential to grow within the company and contribute to its evolving needs.

Communicate Clearly and Confidently

Effective communication is key during interviews. Practice articulating your thoughts clearly and confidently. This is especially important during technical discussions where you may need to explain complex concepts. Remember, interviewers appreciate candidates who can convey their ideas in a straightforward manner.

Be Ready for Technical Challenges

Expect to solve coding problems on the spot, so practice coding under timed conditions. Familiarize yourself with common algorithms and data structures, and be prepared to write code on a whiteboard or in an online coding environment. This will help you feel more comfortable and confident during the technical rounds.

Research Company Culture

Understanding Tech Mahindra's culture can give you an edge. Research their values, recent projects, and any community initiatives they are involved in. This knowledge will allow you to tailor your responses to align with the company's mission and demonstrate your genuine interest in being part of their team.

By following these tips, you'll be well-prepared to navigate the interview process at Tech Mahindra and showcase your skills effectively. Good luck!

In this section, we’ll review the various interview questions that might be asked during a Software Engineer interview at Tech Mahindra. The interview process typically includes a mix of technical and behavioral questions, focusing on programming skills, problem-solving abilities, and understanding of software development principles. Candidates should be prepared to demonstrate their knowledge of programming languages, particularly C and C++, as well as their grasp of operating systems and data structures.

Technical Skills

1. Explain the differences between JDK, JRE, and JVM.

Understanding the Java ecosystem is crucial for any software engineer, especially if the role involves Java development.

How to Answer

Discuss the roles of each component in the Java environment, emphasizing how they interact with each other.

Example

“JDK, or Java Development Kit, is a complete toolkit for developing Java applications, including the JRE and development tools. The JRE, or Java Runtime Environment, provides the libraries and components necessary to run Java applications, while the JVM, or Java Virtual Machine, is the engine that executes Java bytecode, converting it into machine code.”

2. Describe a challenging coding problem you faced and how you solved it.

This question assesses your problem-solving skills and ability to handle challenges.

How to Answer

Choose a specific example, explain the problem, your approach to solving it, and the outcome.

Example

“I encountered a performance issue in a data processing application where the execution time was significantly higher than expected. I profiled the code and identified a bottleneck in a nested loop. By optimizing the algorithm to reduce the complexity from O(n^2) to O(n log n), I was able to improve the performance by over 50%.”

3. What are the main features introduced in Java 8?

This question tests your knowledge of recent advancements in Java.

How to Answer

Highlight key features such as lambda expressions, the Stream API, and default methods in interfaces.

Example

“Java 8 introduced several significant features, including lambda expressions for functional programming, the Stream API for processing sequences of elements, and default methods in interfaces, which allow for method implementations in interfaces without breaking existing implementations.”

4. Explain the concept of functional interfaces.

Understanding functional interfaces is essential for working with Java 8 and beyond.

How to Answer

Define functional interfaces and provide examples of their use.

Example

“A functional interface is an interface that contains exactly one abstract method. They can be used as the assignment target for lambda expressions. An example is the Runnable interface, which has a single method run().”

5. What is a constructor in Java?

This question assesses your understanding of object-oriented programming concepts.

How to Answer

Explain the purpose of constructors and how they are used in class instantiation.

Example

“A constructor is a special method used to initialize objects. It is called when an instance of a class is created. Constructors can have parameters to set initial values for object attributes, and if no constructor is defined, a default constructor is provided by the compiler.”

Data Structures and Algorithms

1. How would you implement a linked list in Java?

This question tests your knowledge of data structures and your coding skills.

How to Answer

Discuss the basic structure of a linked list and how to implement it, including methods for adding and removing nodes.

Example

“I would create a Node class with data and a reference to the next node. The LinkedList class would manage the head node and provide methods for adding, removing, and traversing the list. For example, to add a node, I would create a new Node and set its next reference to the current head, then update the head to the new node.”

2. Explain the concept of recursion and provide an example.

Recursion is a fundamental programming concept that is often tested in interviews.

How to Answer

Define recursion and provide a simple example, such as calculating the factorial of a number.

Example

“Recursion is a technique where a function calls itself to solve a problem. For instance, to calculate the factorial of a number n, I would define a function that returns n multiplied by the factorial of n-1, with a base case of 1 when n equals 0.”

3. What is a binary tree, and how do you traverse it?

Understanding tree data structures is crucial for many software engineering roles.

How to Answer

Define a binary tree and explain the different traversal methods (in-order, pre-order, post-order).

Example

“A binary tree is a data structure where each node has at most two children. Traversal can be done in several ways: in-order traversal visits the left child, the node, and then the right child; pre-order visits the node first, followed by the left and right children; and post-order visits the left and right children before the node.”

4. How do you detect a cycle in a linked list?

This question tests your problem-solving skills and understanding of linked lists.

How to Answer

Explain the Floyd’s Cycle Detection algorithm (Tortoise and Hare) and how it works.

Example

“To detect a cycle in a linked list, I would use two pointers: a slow pointer that moves one step at a time and a fast pointer that moves two steps at a time. If there is a cycle, the fast pointer will eventually meet the slow pointer. If the fast pointer reaches the end of the list, there is no cycle.”

5. Can you explain the concept of hashing and its applications?

Hashing is a key concept in data structures and algorithms.

How to Answer

Define hashing and discuss its use in data retrieval and storage.

Example

“Hashing is a technique used to map data of arbitrary size to fixed-size values, typically using a hash function. It is commonly used in hash tables for efficient data retrieval, allowing for average-case constant time complexity for search, insert, and delete operations.”