Backend Engineer Interview Questions

14,358 backend engineer interview questions shared by candidates

- Calculating highest number of steps taken by a person in last 5 minutes, from a data, from a device like fit bit, which stored the information for many people. (Approaches, pseudo code, data storage structure) - Discussions on how an app like split wise could be made.
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Backend Engineer

Interviewed at smallcase

3.8
Apr 7, 2021

- Calculating highest number of steps taken by a person in last 5 minutes, from a data, from a device like fit bit, which stored the information for many people. (Approaches, pseudo code, data storage structure) - Discussions on how an app like split wise could be made.

1st round: 1. Time and Space complexity of all the data structures and algorithms. 2. What is Scaling? What is Vertical and Horizontal Scaling? 3. Questions on Java 8 2nd round: 3 coding questions, I attended only two 1. Balancing brackets like "()[]{}" and "([)]" . Push in stack if open bracker is encountered and pop from Stack if closing bracket is the and match them. https://leetcode.com/problems/valid-parentheses/ 2. Given a linked list, determine if it has a cycle in it https://leetcode.com/problems/linked-list-cycle/
Oct 31, 2021

1st round: 1. Time and Space complexity of all the data structures and algorithms. 2. What is Scaling? What is Vertical and Horizontal Scaling? 3. Questions on Java 8 2nd round: 3 coding questions, I attended only two 1. Balancing brackets like "()[]{}" and "([)]" . Push in stack if open bracker is encountered and pop from Stack if closing bracket is the and match them. https://leetcode.com/problems/valid-parentheses/ 2. Given a linked list, determine if it has a cycle in it https://leetcode.com/problems/linked-list-cycle/

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