Backend Developer Interview Questions

15,457 backend developer interview questions shared by candidates

One key area of questioning, which stemmed from the assignment, involved discussing the appropriate HTTP status codes and response formats for various API endpoints, particularly in the context of adhering to RESTful best practices.
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Backend Engineer

Interviewed at Reydix

3.9
Jul 7, 2025

One key area of questioning, which stemmed from the assignment, involved discussing the appropriate HTTP status codes and response formats for various API endpoints, particularly in the context of adhering to RESTful best practices.

Asked me a bunch of general CS related questions - what’s the difference between UDP and TCP? - how do two processes running in a computer communicate with each other? - how do two processes share / send data to each other? Coding question: Given a sorted non-decreasing array of integers and a target integer, find the start and end index of the target integer.
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Backend Software Engineer

Interviewed at TikTok

3.2
Oct 3, 2023

Asked me a bunch of general CS related questions - what’s the difference between UDP and TCP? - how do two processes running in a computer communicate with each other? - how do two processes share / send data to each other? Coding question: Given a sorted non-decreasing array of integers and a target integer, find the start and end index of the target integer.

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