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Backend Software Engineer Interview Questions

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2,346 backend software engineer interview questions shared by candidates

Q: Max depth of a Tree. Q: Given a boolean 2D matrix, find the number of islands. A group of connected 1s forms an island. Q: Designing a calculator. Q: Resume Discussion. Q: Question on basics of Networking, OOPs and OS.
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Software Engineer, Backend

Interviewed at Cashfree

3.7★
Aug 11, 2020

Q: Max depth of a Tree. Q: Given a boolean 2D matrix, find the number of islands. A group of connected 1s forms an island. Q: Designing a calculator. Q: Resume Discussion. Q: Question on basics of Networking, OOPs and OS.

Il est difficile de citer une seule question tant les entretiens furent nombreux et différents, il y a eu des questions sur mon poste actuel, sur mes motivations pour avoir postulé chez Alma, des questions très techniques et enfin des questions générales sur ma personnes lors du team fit. Je pourrais citer la question sur le fait de savoir ce qui m'intéressait dans le poste et pourquoi je postulais dessus.
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Backend Software Engineer

Interviewed at Alma (France)

4★
Aug 19, 2025

Il est difficile de citer une seule question tant les entretiens furent nombreux et différents, il y a eu des questions sur mon poste actuel, sur mes motivations pour avoir postulé chez Alma, des questions très techniques et enfin des questions générales sur ma personnes lors du team fit. Je pourrais citer la question sur le fait de savoir ce qui m'intéressait dans le poste et pourquoi je postulais dessus.

1. Binary tree problems. 2. LinkedList problems. 3. Java OOPs concepts 4. Java Collections behavior 5. SQL Join Queries and complex Aggregate functions 6. String Problems 7. Recursion Algorithm problems. For all the questions, I was asked to write the code on paper. I don't know why they conduct interviews if they never wished to give the offer.
avatar

Software Engineer, Backend

Interviewed at Visto

3.5★
Oct 9, 2017

1. Binary tree problems. 2. LinkedList problems. 3. Java OOPs concepts 4. Java Collections behavior 5. SQL Join Queries and complex Aggregate functions 6. String Problems 7. Recursion Algorithm problems. For all the questions, I was asked to write the code on paper. I don't know why they conduct interviews if they never wished to give the offer.

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