Backend Engineer Interview Questions

15,469 backend engineer interview questions shared by candidates

Given a list of accounts and using the information in data module, return a dictionary where each key is an account and its value is dictionary with the accounts total orders, completed orders and pending orders example: given ["u2"]. For this challenge you will consume an API to fetch todos individually. Given a list of todo ids, fetch each todo and return a list of todos Example of a request: https://jsonplaceholder.typicode.com/todos/1 Improve the performance of the above function afterwards if have not done yet. In this challenge you need to read the csv file and perform the following: Clean the data as best as you can Calculate the mean of the annual salaries, calculate the max and minimum of the annual salaries Calculate the most common employment_status and most common married status As a bonus you need save the clean data as a VALID JSON file.
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Backend Developer

Interviewed at Rever

4.2
Jul 26, 2022

Given a list of accounts and using the information in data module, return a dictionary where each key is an account and its value is dictionary with the accounts total orders, completed orders and pending orders example: given ["u2"]. For this challenge you will consume an API to fetch todos individually. Given a list of todo ids, fetch each todo and return a list of todos Example of a request: https://jsonplaceholder.typicode.com/todos/1 Improve the performance of the above function afterwards if have not done yet. In this challenge you need to read the csv file and perform the following: Clean the data as best as you can Calculate the mean of the annual salaries, calculate the max and minimum of the annual salaries Calculate the most common employment_status and most common married status As a bonus you need save the clean data as a VALID JSON file.

Final round, coding interview: given a web framework and a root node in a map, make an endpoint which returns a list of each node and its corresponding neighbors in the map. Follow up question: make an endpoint which accepts a specific target node and returns its neighbors in the map.
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Backend Engineer

Interviewed at Graphika

4.5
Dec 13, 2020

Final round, coding interview: given a web framework and a root node in a map, make an endpoint which returns a list of each node and its corresponding neighbors in the map. Follow up question: make an endpoint which accepts a specific target node and returns its neighbors in the map.

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