Lowe's Senior Software Engineer Interview Questions and Answers for Experienced

The assessment consisted of an online round lasting one hour, during which there were 33 questions, all of which were challenging, including the multiple-choice questions. The questions were divided into six subsections: 1. Data Structures and Algorithms (DSA) - with a problem related to dynamic programming or recursion; 2. Java; 3. Java 8; 4. Spring; 5. Spring Boot; 6. Microservices.

Q1. What is ReactQuery?
Ans. 
ReactQuery is a library for managing server state in React applications.
• Provides hooks for fetching, caching, and updating data from APIs

• Automatically handles caching, background refetching, and stale data management

• Improves performance by reducing unnecessary network requests
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Q2. Have you used useMemo, useCallback
Ans. 
Yes, I have used useMemo and useCallback in React applications.
• Used useMemo to memoize expensive calculations and prevent unnecessary re-renders.

• Used useCallback to memoize functions and prevent unnecessary re-creations.

• Example: const memoizedValue = useMemo(() => calculateValue(a, b), [a, b]);

• Example: const memoizedFunction = useCallback(() => { doSomething(a, b); }, [a, b]);
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Tree & linkedlist questions

Q1. About tech stack interview questions
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Q1. Closures, Projecr structure in react Why use redux What frameworks are available
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Q1. Web performance Currying LLD
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Simple link to solve problems mostly from leetcode

Q1. Dsa quesions on stack
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Q2. Dsa question on linkedlist
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Test on java mostly covered multithreading

Q1. Design round asked to design a cache
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Q1. Managerial round mostly dependent on experiences
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Q1. Salary negotiation
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Q1. Implement infinite scroll
Ans. 
Implementing infinite scroll for a web application
• Use a front-end framework like React or Angular to handle the scrolling functionality

• Fetch additional data from the server as the user scrolls down the page

• Update the UI with the new data without reloading the entire page
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Q2. Intersection observer API
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