MEL Systems and Services Software Developer Interview Questions and Answers for Experienced

2 coding questions one was greedy and 2nd one was of dp.

Assigned data analysis project

Q1. Tell me about your self
Ans. 
I am a passionate software engineer with experience in developing web applications using various technologies.
• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with Node.js and databases like MongoDB and MySQL

• Familiar with version control systems like Git and project management tools like Jira
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Q2. Tell abt the projects
Ans. 
Developed a web application for tracking inventory and sales data
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database management
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Leetcode Medium quesions

Q1. Explain runtime polymorphism used in your project
Ans. 
Runtime polymorphism in Java allows a subclass to provide a specific implementation of a method that is already provided by its superclass.
• Runtime polymorphism is achieved through method overriding, where a subclass provides its own implementation of a method that is already defined in its superclass.

• The method to be overridden must have the same name, return type, and parameters in both the superclass and subclass.

• At ...read more
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Q2. How do you do authentication and authorisation in your java spring boot app
Ans. 
Authentication and authorization in a Java Spring Boot app involves using Spring Security for managing user access.
• Use Spring Security to handle authentication and authorization

• Configure security settings in the application.properties file

• Implement custom authentication providers if needed

• Use annotations like @PreAuthorize and @Secured for method-level security
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Coding, Maths, Reasoning etc

Q1. Technical questions related to programming languages.
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Q1. Environment and salary etc
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Basic aptitude questions.

Q1. Puzzles, Linked list
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Q1. Hobbies, Family background
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Test, java, spring, microservices