Senior Backend Engineer Interview Questions

2,034 senior backend engineer interview questions shared by candidates

R1: There were 3 question, (2 Medium + 1 Hard) - Q1: Graph + BFS - Q2: https://leetcode.com/problems/mirror-reflection/description/ - Q3: DP R2: Design a resume parser and resume bank where user can search for keywords among the datastore of resumes. R3: Foundational CS concepts + Some discussion around Kafka & SQS + SAGA Patterns + previous projects
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Senior Backend Engineer

Interviewed at VMock

3
Jul 6, 2025

R1: There were 3 question, (2 Medium + 1 Hard) - Q1: Graph + BFS - Q2: https://leetcode.com/problems/mirror-reflection/description/ - Q3: DP R2: Design a resume parser and resume bank where user can search for keywords among the datastore of resumes. R3: Foundational CS concepts + Some discussion around Kafka & SQS + SAGA Patterns + previous projects

Check if string contains the exact same number of repetitions of every character. I.e. "aabb" - true, "aabbc" - false. Then check if removing a single character from the string can make it valid, i.e. "aabbc" - true, "aaabbbcc" - false
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Senior Backend Engineer

Interviewed at Bolt

3.4
Dec 13, 2019

Check if string contains the exact same number of repetitions of every character. I.e. "aabb" - true, "aabbc" - false. Then check if removing a single character from the string can make it valid, i.e. "aabbc" - true, "aaabbbcc" - false

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