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Backend Software Engineer Interview Questions

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9,103 backend software engineer interview questions shared by candidates

Using a list of keywords, find every index of the sequence in another list of words. Ordering doesn't matter, the keywords just all need to be there. They supposedly don't care about optimizations as long as you have at least a brute-force answer.
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Senior Backend Software Engineer

Interviewed at Regard Technologies

4.6★
Dec 1, 2024

Using a list of keywords, find every index of the sequence in another list of words. Ordering doesn't matter, the keywords just all need to be there. They supposedly don't care about optimizations as long as you have at least a brute-force answer.

3. 3rd round was easy but you only get 10 min to write and sql query equivalent to medium level dsa problem, the question was like some aggregation of regional sales, like sales in region and grouping stuff, I was almost at solution, but times up, it was easy, but I mostly used prisma in most of my projects, so it hurts now.
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Backend Developer

Interviewed at The Alter Office

4.4★
Sep 10, 2025

3. 3rd round was easy but you only get 10 min to write and sql query equivalent to medium level dsa problem, the question was like some aggregation of regional sales, like sales in region and grouping stuff, I was almost at solution, but times up, it was easy, but I mostly used prisma in most of my projects, so it hurts now.

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