Lead Backend Developer Interview Questions

9,388 lead backend developer interview questions shared by candidates

Round 1. Leetcode (Merge Intervals) + Technical questions about Sorting and its best case/worst case scanarios, database concepts (concurrency etc), districuted systems relating to databases and some networking questions related to HTTP calls Round 2. Resume dive (previous internship and techinal projects), questions about cookies and JWTs for security (related to my internship), questions about B+ tree operations,and Leetcode (square root of a floating point number)
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Backend Engineer

Interviewed at TikTok

3.2
May 20, 2025

Round 1. Leetcode (Merge Intervals) + Technical questions about Sorting and its best case/worst case scanarios, database concepts (concurrency etc), districuted systems relating to databases and some networking questions related to HTTP calls Round 2. Resume dive (previous internship and techinal projects), questions about cookies and JWTs for security (related to my internship), questions about B+ tree operations,and Leetcode (square root of a floating point number)

- Asked about past internship/work experience describing the team work style and views on how the communication went - Asked about some situational questions such as how to handle late deadline either as intern or as manager
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Backend Engineer Intern

Interviewed at TikTok

3.2
Jul 29, 2025

- Asked about past internship/work experience describing the team work style and views on how the communication went - Asked about some situational questions such as how to handle late deadline either as intern or as manager

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