Backend Engineer Interview Questions

14,385 backend engineer interview questions shared by candidates

You can prepare the following for the first round: 1. Basics of HTTP 2. Basics of Databases 3. Python Basics 4. Django Basics Questions Asked: 1. How does authentication work in Django 2. Various Types of Authentication Mechanism 3. Background of your work The interviewer went through the code and asked relevent questions. Third Round was a system design round: 1. Basic Introduction 2. The following question was asked Free Shipping( To be distributed to 10% users) By one Get One (To be distributes to 10% users) Flat 10% off (To be distributed to 80%) The tasks is to find a way to distribute the coupons such that in every checkout the user is provided with a coupon and this coupon should one of above three. There are multiiple users coming in your system and this distribution pattern should be mainitained in the system. 4. Asked questions of database locks during a flash sale. I was not able to answer the questions properly. I even forgot the SELECT FOR UPDATE thing :p. My suggestion is that the interview is not so difficult just be confident. Here is the solution for the ticket distribution.
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Backend Engineer

Interviewed at Avoma

3.9
Nov 16, 2022

You can prepare the following for the first round: 1. Basics of HTTP 2. Basics of Databases 3. Python Basics 4. Django Basics Questions Asked: 1. How does authentication work in Django 2. Various Types of Authentication Mechanism 3. Background of your work The interviewer went through the code and asked relevent questions. Third Round was a system design round: 1. Basic Introduction 2. The following question was asked Free Shipping( To be distributed to 10% users) By one Get One (To be distributes to 10% users) Flat 10% off (To be distributed to 80%) The tasks is to find a way to distribute the coupons such that in every checkout the user is provided with a coupon and this coupon should one of above three. There are multiiple users coming in your system and this distribution pattern should be mainitained in the system. 4. Asked questions of database locks during a flash sale. I was not able to answer the questions properly. I even forgot the SELECT FOR UPDATE thing :p. My suggestion is that the interview is not so difficult just be confident. Here is the solution for the ticket distribution.

I won't specify with the respect to the company's hiring processes. The 2 questions were "easy". After multiple requests to specify the context of the question (because based on that your answer can vary a lot), got nothing back but the repeated same question without any more details.
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Python Senior Backend Engineer

Interviewed at Y42

4.1
Apr 20, 2023

I won't specify with the respect to the company's hiring processes. The 2 questions were "easy". After multiple requests to specify the context of the question (because based on that your answer can vary a lot), got nothing back but the repeated same question without any more details.

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