Infosys Software Engineer Interview Questions and Answers

Developed a web-based application for managing project tasks and team collaboration, enhancing productivity and communication.

• Utilized React for the front-end, providing a responsive user interface.

• Implemented Node.js and Express for the back-end, ensuring efficient data handling.

• Integrated MongoDB for database management, allowing for scalable data storage.

• Incorporated user authentication using JWT for secure acc...read more

I am a Software Engineer focused on developing scalable applications and collaborating with cross-functional teams to deliver high-quality software.

• Developing and maintaining web applications using technologies like React and Node.js.

• Collaborating with product managers to gather requirements and translate them into technical specifications.

• Implementing best practices for code quality and performance, such as code ...read more

I have extensive experience in software engineering, focusing on full-stack development and agile methodologies.

• Developed a web application using React and Node.js, improving user engagement by 30%.

• Led a team of 5 in an agile environment, successfully delivering projects on time.

• Implemented RESTful APIs for a healthcare application, ensuring data security and compliance.

• Optimized database queries, reducing load ti...read more

REST APIs are architectural styles for designing networked applications using HTTP requests to access and manipulate data.

• REST stands for Representational State Transfer.

• Uses standard HTTP methods: GET, POST, PUT, DELETE.

• Stateless communication; each request from client to server must contain all information.

• Resources are identified by URIs (Uniform Resource Identifiers). Example: /users/123.

• Commonly used in web s...read more

JWT (JSON Web Token) is a compact, URL-safe means of representing claims to be transferred between two parties.

• JWT consists of three parts: Header, Payload, and Signature.

• Example of a JWT: 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c'.

• JWTs are commonly used for authentication and information exchange in ...read more

I want this job to leverage my skills in software development, contribute to innovative projects, and grow within a dynamic team environment.

• I am passionate about coding and enjoy solving complex problems, as demonstrated in my previous project where I optimized an algorithm, improving performance by 30%.

• I admire your company's commitment to innovation and would love to contribute to projects that push the boundar...read more

Identifying prime numbers involves checking divisibility by integers up to the square root of the number.

• A prime number is greater than 1 and has no divisors other than 1 and itself.

• To check if a number n is prime, test divisibility from 2 to √n.

• For example, to check if 29 is prime: test 2, 3, 4, 5 (all ≤ √29). None divide 29, so it's prime.

• For composite numbers, like 30, it can be divided by 2, 3, 5, etc., confir...read more

Kubernetes (K8s) is an open-source platform for automating deployment, scaling, and management of containerized applications.

• K8s orchestrates containers across a cluster of machines, ensuring high availability and scalability.

• It uses a declarative configuration model, allowing users to define the desired state of applications.

• K8s supports rolling updates, enabling seamless application updates without downtime.

• It p...read more