Senior Backend Engineer Interview Questions

2,034 senior backend engineer interview questions shared by candidates

Lot about my experience and usual story of how you convince etc etc ., 2n round was design and one of the panelist is unprofessional and keeps interupting and never allowed me to explain solution. Not sure how Ikea still keeps him and allowing him to be as panelist.
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Senior Backend Engineer

Interviewed at IKEA

3.7
Aug 31, 2022

Lot about my experience and usual story of how you convince etc etc ., 2n round was design and one of the panelist is unprofessional and keeps interupting and never allowed me to explain solution. Not sure how Ikea still keeps him and allowing him to be as panelist.

Design a system that tracks files stored in S3. Given two API endpoints—one that lists the files and another that provides details such as file size—design a system that counts the total number of files and calculates their combined size.
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Senior Backend Engineer

Interviewed at Cyera

4.5
Mar 8, 2025

Design a system that tracks files stored in S3. Given two API endpoints—one that lists the files and another that provides details such as file size—design a system that counts the total number of files and calculates their combined size.

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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