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Backend Software Engineer Interview Questions

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15,498 backend software engineer interview questions shared by candidates

Round2 (Technical 2): This interview supposed to be tougher than the previous one. The interviewer asked me about java fundamental questions. Notes: Look into topics like thread, garbage collection, collections framework. After that, he asked me to design LRU Cache. Was able to do that. Then asked me to implement Priority Queue. Also did that. And that was all for this round.
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Backend Engineer

Interviewed at CleverTap

4.3★
Nov 13, 2024

Round2 (Technical 2): This interview supposed to be tougher than the previous one. The interviewer asked me about java fundamental questions. Notes: Look into topics like thread, garbage collection, collections framework. After that, he asked me to design LRU Cache. Was able to do that. Then asked me to implement Priority Queue. Also did that. And that was all for this round.

They asked algorithm questions to check my problem solving skills and data structure knowledge. One question was about fill color function. Basically they I asked how can you fill a given grid with the color of the selected pixel. Then they asked me about my favorite data structure and whether I know how it is implemented.
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Backend Developer

Interviewed at Booking.com

4★
Dec 15, 2015

They asked algorithm questions to check my problem solving skills and data structure knowledge. One question was about fill color function. Basically they I asked how can you fill a given grid with the color of the selected pixel. Then they asked me about my favorite data structure and whether I know how it is implemented.

The values interview questions were all provided beforehand by the internal recruiter, to allow the candidate to prepare answers in advance for each point. The technical interview tasks were also provided beforehand, for the candidate to prepare for, and to allow the candidate to practice both parts if they so desired. The first technical interview task was to domain model for a situation. The second technical interview task was to write the backend ruby code for a different requirement.
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Software Engineer - Backend (Ruby)

Interviewed at Cleo (United Kingdom)

3.4★
Nov 2, 2023

The values interview questions were all provided beforehand by the internal recruiter, to allow the candidate to prepare answers in advance for each point. The technical interview tasks were also provided beforehand, for the candidate to prepare for, and to allow the candidate to practice both parts if they so desired. The first technical interview task was to domain model for a situation. The second technical interview task was to write the backend ruby code for a different requirement.

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