Granicus Senior Software Engineer Interview Questions and Answers

Q1. Concept of Hoisting in Javascript
Ans. 
Hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their containing scope during compilation.
• Variable declarations are hoisted to the top of their scope, but not their initializations.

• Function declarations are fully hoisted, including their definitions.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q2. What is arrow function
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Arrow functions are a concise way to write functions in JavaScript.
• Arrow functions are anonymous functions defined using the '=>' syntax.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword, instead they inherit it from the parent scope.
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Q3. Polyfill of Promise
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Polyfill of Promise is a code that adds Promise functionality to browsers that do not support it natively.
• Polyfill is a piece of code that provides the technology that you expect the browser to provide natively.

• Polyfill for Promise adds Promise functionality to browsers that do not support it, allowing developers to use Promises in their code.

• Examples of Promise polyfills include 'es6-promise' and 'promise-polyfill'.
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Q1. Implementation of carousel
Ans. 
Implementing a carousel for displaying multiple images or content in a rotating manner.
• Use a library like Slick or Owl Carousel for easy implementation

• Ensure images/content are responsive for different screen sizes

• Add navigation arrows or dots for user interaction

• Consider adding autoplay feature with customizable speed

• Optimize performance by lazy loading images
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Q1. How google.com works
Ans. 
Google.com is a search engine that uses web crawlers to index websites and algorithms to rank search results.
• Google uses web crawlers to index websites and store information in its database.

• Algorithms are used to rank search results based on relevance and popularity.

• Google also uses personalized search results based on user data and location.

• Google's homepage is simple and fast-loading to provide a user-friendly experi
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Q2. How rest works, in array of 500 elements give top 15 elements discussion about complexities
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Q1. It was more into problem solving using python
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Medium level question

Q1. Coding round related to Data structures
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Q1. It was mostly on scenario based questions and I was asked to code online.
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Q1. Discussion were there past projects, how different objectives were done.
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Q1. System design questions related to the product
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Q1. What is Testing and explain the concept of testing in Industry
Ans. 
Testing is the process of evaluating a system or application to identify any defects or errors.
• Testing involves executing a system or application to ensure it meets specified requirements.

• Types of testing include unit testing, integration testing, system testing, and acceptance testing.

• Testing helps identify bugs, defects, and issues in software before it is released to users.

• Automated testing tools like Selenium, JUni...read more
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Q2. Testing Types and explain
Ans. 
Testing types include unit testing, integration testing, system testing, and acceptance testing.
• Unit testing focuses on testing individual components or functions in isolation.

• Integration testing verifies that different components work together correctly.

• System testing tests the entire system as a whole.

• Acceptance testing ensures that the system meets the requirements and is ready for deployment.
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Q3. What is RTM and explain it?
Ans. 
RTM stands for Requirements Traceability Matrix, a document that links requirements to test cases to ensure all requirements are covered.
• RTM is a document used in software development to track and ensure that all requirements are met through test cases.

• It helps in identifying which requirements have been covered by which test cases.

• RTM is useful for ensuring that all requirements are tested and validated before the sof...read more
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Q4. Bug defect tools and what you use in current company?
Ans. 
We use Jira for bug tracking and defect management in my current company.
• Jira is a popular bug tracking tool used for issue tracking and project management.

• It allows teams to prioritize, assign, track, and report on issues.

• Jira integrates with other tools like Confluence for better collaboration.

• Other bug defect tools include Bugzilla, Mantis, and Trello.
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Q5. Explain any project and what is your role ?
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Led a team of 5 developers in designing and implementing the front-end using React

• Integrated with backend APIs built in Node.js for real-time updates

• Implemented user authentication and authorization using JWT tokens

• Utilized PostgreSQL database for storing project data
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Q1. When defect found before one day to GO-LIVE (Prod). How you justify and how we deal with Client?
Ans. 
Address the defect professionally, provide a plan to fix it, and communicate transparently with the client.
• Acknowledge the defect and take ownership of the issue.

• Provide a detailed analysis of the defect, its impact, and the plan to fix it.

• Communicate transparently with the client about the situation and the steps being taken to resolve it.

• Discuss any potential risks or delays in the GO-LIVE schedule and propose mitiga...read more
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Q2. How you deal with clients and how do you manage them?
Ans. 
I communicate regularly with clients to understand their needs and expectations, provide updates on progress, and address any concerns.
• Establish clear communication channels with clients

• Regularly update clients on project progress

• Listen to client feedback and address any concerns promptly

• Set realistic expectations with clients regarding timelines and deliverables
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Q1. Design a paginated list of items, then improve efficiency
Ans. 
Design a paginated list of items and improve efficiency
• Implement lazy loading to fetch data only when needed

• Use caching to store previously fetched data for faster retrieval

• Optimize database queries to reduce load times
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Q1. Basics on Javascript, ReactJS
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