Back End Engineer Interview Questions

1,086 back end engineer interview questions shared by candidates

question like: ArrayList list = new ArrayList(); for (i =0; i < 10000;i++) { list.add(i); } do you see a problem here ? you add to answer that this list is slower than the new List object and there is a danger of mixing different object type in the same list. I didn't event think of that because you are looking for the catch. and it goes on like this the hole interview.
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.NET Back End Programmer

Interviewed at BDC

3.9
Oct 25, 2019

question like: ArrayList list = new ArrayList(); for (i =0; i < 10000;i++) { list.add(i); } do you see a problem here ? you add to answer that this list is slower than the new List object and there is a danger of mixing different object type in the same list. I didn't event think of that because you are looking for the catch. and it goes on like this the hole interview.

first interview - 2 questions, 1) function that returns if the a string with parentheses, a.k.a "&lt;&gt;(){}{}sadasd" is in the right logical sense. 2) fix some long broken code. second interview- 1. implement string lexicographical compare function. and two other questions , implement functions for code out put , felt like then and resolve operator overload.
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JavaScript Developer (back-end / full-stack)

Interviewed at Bright Data

3.8
Dec 24, 2023

first interview - 2 questions, 1) function that returns if the a string with parentheses, a.k.a "&lt;&gt;(){}{}sadasd" is in the right logical sense. 2) fix some long broken code. second interview- 1. implement string lexicographical compare function. and two other questions , implement functions for code out put , felt like then and resolve operator overload.

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