Backend Developer Interview Questions

9,196 backend developer interview questions shared by candidates

Both rounds of the interview had technical challenges around a Medium on HackerRank. First problem was about creating a DataStructure capable of handling insertions and deletions all in O(1) as well as having a function that returns a random element.
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Backend Developer

Interviewed at ByteDance

3.4
Jun 25, 2021

Both rounds of the interview had technical challenges around a Medium on HackerRank. First problem was about creating a DataStructure capable of handling insertions and deletions all in O(1) as well as having a function that returns a random element.

1. Coding Interview: - Least common ancestor of two nodes in binary tree - Account’s grouping based on related email -> Graph 2. Behavioural Interview. Talk about my role at previous company 3. Hiring Manager Interview - System Design: Design a Google Docs - Run through systems architecture at Previous company
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Backend Software Engineer

Interviewed at TikTok

3.2
Dec 1, 2021

1. Coding Interview: - Least common ancestor of two nodes in binary tree - Account’s grouping based on related email -> Graph 2. Behavioural Interview. Talk about my role at previous company 3. Hiring Manager Interview - System Design: Design a Google Docs - Run through systems architecture at Previous company

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