Infosys Software Engineer Interview Questions + Guide in 2025

Infosys is a global leader in next-generation digital services and consulting, enabling clients in over 56 countries to navigate their digital transformation.

As a Software Engineer at Infosys, you will be responsible for designing, developing, and maintaining software applications with a focus on performance and scalability. Your key responsibilities will include collaborating with cross-functional teams to implement solutions that meet business requirements, conducting code reviews, and mentoring junior developers to uphold best practices in coding and software design. You will also be expected to engage in problem-solving and troubleshooting within complex software systems, often utilizing your expertise in programming languages such as Java, C++, or Python, along with frameworks like Spring Boot and cloud technologies.

A successful Software Engineer at Infosys will possess strong analytical skills, a solid understanding of data structures and algorithms, and familiarity with software development methodologies such as Agile. You should demonstrate excellent communication skills, as your role will involve working closely with stakeholders to deliver high-quality digital experiences that align with the company's commitment to innovation and client satisfaction.

This guide will help you prepare for your interview by providing insights into the role's expectations and the types of questions you may encounter, ultimately giving you a competitive edge during the selection process.

The interview process for a Software Engineer at Infosys is structured and typically consists of multiple rounds designed to assess both technical and interpersonal skills.

1. Online Assessment

The first step in the interview process is an online assessment that evaluates candidates on their quantitative aptitude, logical reasoning, and basic programming skills. This assessment often includes coding questions that test your understanding of data structures and algorithms, as well as your proficiency in languages such as Java, C++, or Python. Candidates who perform well in this round are shortlisted for the next stage.

2. Technical Interview

Following the online assessment, candidates will participate in a technical interview. This round usually lasts around 30 to 45 minutes and focuses on core programming concepts, problem-solving abilities, and technical knowledge relevant to the role. Interviewers may ask questions related to object-oriented programming (OOP), data structures, algorithms, and specific technologies mentioned in your resume. You may also be required to write code on a whiteboard or share your screen to demonstrate your coding skills in real-time.

3. Behavioral Interview

The final round typically involves a behavioral interview, which assesses your soft skills, cultural fit, and ability to work in a team. Interviewers may ask about your previous experiences, how you handle challenges, and your approach to collaboration and communication. This round is crucial as it helps the interviewers gauge your interpersonal skills and alignment with Infosys's values.

In some cases, especially for more experienced candidates or specific roles, there may be additional technical interviews or a managerial round to further evaluate your expertise and fit for the team.

As you prepare for your interview, it's essential to familiarize yourself with the types of questions that may be asked in each round.

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

Understand the Interview Structure

The interview process at Infosys typically consists of multiple rounds, including an online assessment, a technical interview, and an HR interview. Familiarize yourself with this structure so you can prepare accordingly. The online assessment often includes quantitative aptitude, logical reasoning, and coding questions, while the technical interview will focus on your programming skills and knowledge of core concepts. Knowing what to expect will help you manage your time and energy effectively during the interview process.

Master Core Technical Skills

As a Software Engineer, you will be expected to demonstrate proficiency in programming languages such as Java, C++, and SQL. Brush up on your understanding of data structures, algorithms, and object-oriented programming principles. Be prepared to solve coding problems on the spot, as interviewers often ask candidates to write code during the technical round. Practicing coding challenges on platforms like LeetCode or HackerRank can be beneficial.

Prepare for Behavioral Questions

Infosys places a strong emphasis on cultural fit and teamwork. Be ready to discuss your previous experiences, how you handle challenges, and your approach to collaboration. Use the STAR (Situation, Task, Action, Result) method to structure your responses, ensuring you provide clear and concise examples that highlight your problem-solving skills and ability to work in a team.

Showcase Your Projects

During the interview, you may be asked about your past projects. Be prepared to discuss the technologies you used, the challenges you faced, and the impact of your work. Highlight any experience you have with modern development practices, such as Agile methodologies, DevOps, or cloud technologies, as these are highly valued at Infosys.

Communicate Clearly and Confidently

Effective communication is crucial in the interview process. Practice articulating your thoughts clearly and confidently. If you encounter a difficult question, take a moment to think before responding. It’s perfectly acceptable to ask for clarification if you don’t understand a question. Demonstrating your thought process can be just as important as arriving at the correct answer.

Emphasize Continuous Learning

Infosys values candidates who are committed to continuous learning and professional development. Be prepared to discuss how you stay updated with industry trends and technologies. Mention any relevant certifications, courses, or personal projects that demonstrate your initiative to grow as a software engineer.

Be Yourself

Finally, remember to be authentic during the interview. Infosys is looking for candidates who align with their values and culture. Show your enthusiasm for the role and the company, and don’t hesitate to express your genuine interest in contributing to their projects and goals.

By following these tips, you can approach your interview with confidence and increase your chances of success at Infosys. Good luck!

In this section, we’ll review the various interview questions that might be asked during an interview for a Software Engineer position at Infosys. The interview process typically includes technical and behavioral questions, focusing on programming skills, problem-solving abilities, and understanding of core concepts in software development.

Technical Skills

1. Can you explain the principles of Object-Oriented Programming (OOP)?

Understanding OOP is crucial for software development. Be prepared to discuss the four main principles: encapsulation, inheritance, polymorphism, and abstraction.

How to Answer

Clearly define each principle and provide examples of how they are applied in real-world programming scenarios.

Example

“OOP is based on four main principles. Encapsulation involves bundling data and methods that operate on that data within a single unit, or class. Inheritance allows a new class to inherit properties and methods from an existing class, promoting code reusability. Polymorphism enables methods to do different things based on the object it is acting upon, while abstraction allows us to hide complex implementation details and expose only the necessary parts.”

2. What is the difference between an abstract class and an interface in Java?

This question tests your understanding of Java's object-oriented features.

How to Answer

Discuss the key differences, including their use cases and when to use one over the other.

Example

“An abstract class can have both abstract methods and concrete methods, while an interface can only have abstract methods until Java 8 introduced default methods. Abstract classes are used when classes share a common base, while interfaces are used to define a contract that implementing classes must follow.”

3. How do you handle exceptions in Java?

Exception handling is a critical aspect of robust software development.

How to Answer

Explain the try-catch-finally block and the importance of handling exceptions properly.

Example

“In Java, exceptions are handled using try-catch blocks. The code that might throw an exception is placed in the try block, and the catch block handles the exception. The finally block can be used for cleanup code that should run regardless of whether an exception occurred.”

4. Can you explain the concept of multithreading and its advantages?

Multithreading is essential for improving application performance.

How to Answer

Define multithreading and discuss its benefits, such as improved resource utilization and responsiveness.

Example

“Multithreading allows multiple threads to run concurrently, which can significantly improve the performance of applications, especially on multi-core processors. It enhances responsiveness, as one thread can handle user input while others perform background tasks.”

5. What are design patterns, and can you name a few?

Design patterns are standard solutions to common problems in software design.

How to Answer

Briefly explain what design patterns are and mention a few commonly used ones.

Example

“Design patterns are proven solutions to recurring design problems. Some common design patterns include Singleton, Factory, Observer, and Strategy. Each pattern addresses a specific problem and provides a template for solving it.”

Programming Skills

1. Write a function to reverse a string in Java.

This question tests your coding skills and understanding of string manipulation.

How to Answer

Provide a clear and efficient solution, explaining your thought process.

Example

“To reverse a string in Java, I would convert the string to a character array, reverse the array, and then create a new string from the reversed array. Here’s a simple implementation: java public String reverseString(String str) { return new StringBuilder(str).reverse().toString(); }

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

This question assesses your understanding of data structures.

How to Answer

Discuss the structure of a linked list and provide a basic implementation.

Example

“A linked list consists of nodes where each node contains data and a reference to the next node. Here’s a simple implementation of a singly linked list: java class Node { int data; Node next; Node(int data) { this.data = data; this.next = null; } }

3. Explain the concept of SQL joins and provide examples.

SQL joins are fundamental for working with relational databases.

How to Answer

Discuss the different types of joins and their use cases.

Example

“SQL joins are used to combine rows from two or more tables based on a related column. The main types are INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN. For example, an INNER JOIN returns only the rows with matching values in both tables.”

4. What is the purpose of using version control systems like Git?

Version control is essential for collaborative software development.

How to Answer

Explain the benefits of using version control systems.

Example

“Version control systems like Git allow multiple developers to work on the same project simultaneously without conflicts. They track changes, enable collaboration, and provide a history of modifications, making it easier to revert to previous versions if needed.”

5. Can you explain the concept of RESTful APIs?

Understanding APIs is crucial for modern software development.

How to Answer

Define RESTful APIs and discuss their principles.

Example

“RESTful APIs are architectural styles for designing networked applications. They use HTTP requests to access and manipulate data. Key principles include statelessness, resource-based URLs, and the use of standard HTTP methods like GET, POST, PUT, and DELETE.”