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Backend Software Engineer Interview Questions

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2,350 backend software engineer interview questions shared by candidates

Tell me about your experience and knowledge in CI/CD. What is the difference between where and having in sequel? What is the difference between a predicate and a function? In which scenario hashmap would not bê suitable?
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Backend Software Engineer

Interviewed at BairesDev

4.3★
Oct 9, 2024

Tell me about your experience and knowledge in CI/CD. What is the difference between where and having in sequel? What is the difference between a predicate and a function? In which scenario hashmap would not bê suitable?

Intro myself What I did in a recent project, team size, my role Java What I found interesting in Java compare to other languages LifeCycle of thread Multithreading and its cost Experience on writing multithreading programing Sleep vs Wait Volatile Synchronize Spring Bean , how many type of beans Achievement/ difficulty in one of my project MVC model Explain how dispatcherServlet handle a http request How Spring handle concurrently request modifying a same database What I use for testing What I should do when any of the test cases fail.
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Backend Software Design Engineer

Interviewed at SAP

4.2★
Jul 14, 2021

Intro myself What I did in a recent project, team size, my role Java What I found interesting in Java compare to other languages LifeCycle of thread Multithreading and its cost Experience on writing multithreading programing Sleep vs Wait Volatile Synchronize Spring Bean , how many type of beans Achievement/ difficulty in one of my project MVC model Explain how dispatcherServlet handle a http request How Spring handle concurrently request modifying a same database What I use for testing What I should do when any of the test cases fail.

Onsite: 1 round similar to https://leetcode.com/problems/zigzag-iterator/description/ 2 round given multiple NFTs with attributes, create all possible combination of new nfts this given attributes follow-up - usage limit on some attributes
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Software Engineer, Backend

Interviewed at Coinbase

3.6★
Mar 12, 2025

Onsite: 1 round similar to https://leetcode.com/problems/zigzag-iterator/description/ 2 round given multiple NFTs with attributes, create all possible combination of new nfts this given attributes follow-up - usage limit on some attributes

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