Back End Developer Interview Questions

1,559 back end developer interview questions shared by candidates

(Live Coding Test Question) SQL: Create a report that displays all the customers that spend more than $50.00 and we shipped to the state of Maryland ("MD"). Req: Display only the following information [ Customer ID, Last Name, First Name, email, phone, total purchase]
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PHP/Laravel Back-End Developer

Interviewed at Metabolic Living

2.6
Apr 13, 2022

(Live Coding Test Question) SQL: Create a report that displays all the customers that spend more than $50.00 and we shipped to the state of Maryland ("MD"). Req: Display only the following information [ Customer ID, Last Name, First Name, email, phone, total purchase]

The tech round is 10 MS SQL questions - because that's what node engineers use, right?! These are Googlable, as they would like be in real life, so it's not too bad. The worst bit is the GraphQL questions. Codility is pretty painful. It has no obvious way to debug, and you don't get details of the unit tests that are not passing. Most of the issues were to do with validation - it was checking this by asserting 1 error came back. The API was giving 2 errors, so this failed. Without knowing what the errors were, it was pretty hard to debug.
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Back End Engineering

Interviewed at Acin

4.2
Dec 17, 2022

The tech round is 10 MS SQL questions - because that's what node engineers use, right?! These are Googlable, as they would like be in real life, so it's not too bad. The worst bit is the GraphQL questions. Codility is pretty painful. It has no obvious way to debug, and you don't get details of the unit tests that are not passing. Most of the issues were to do with validation - it was checking this by asserting 1 error came back. The API was giving 2 errors, so this failed. Without knowing what the errors were, it was pretty hard to debug.

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