Full Stack Software Engineer Interview Questions

19,501 full stack software engineer interview questions shared by candidates

The one question that really stood out was when the interviewer asked me to "Explain the complete end-to-end flow of what happens when a user clicks a 'Save' button on a form in your React application." It wasn't just a simple question; he wanted me to trace the entire journey of the request, from the frontend all the way to the database and back.
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Full Stack Developer

Interviewed at Sapiens

3.4
Aug 26, 2025

The one question that really stood out was when the interviewer asked me to "Explain the complete end-to-end flow of what happens when a user clicks a 'Save' button on a form in your React application." It wasn't just a simple question; he wanted me to trace the entire journey of the request, from the frontend all the way to the database and back.

A entrevista de baseava em apresentar um projeto prático que consistia em implementar um web scrapper do github. As perguntas eram basicamente sobre o código que eu escrevi e em como poderia ser melhorado e as coisas que ficaram faltando ao teste.
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Full Stack Developer

Interviewed at Trustly

3.7
Jan 19, 2021

A entrevista de baseava em apresentar um projeto prático que consistia em implementar um web scrapper do github. As perguntas eram basicamente sobre o código que eu escrevi e em como poderia ser melhorado e as coisas que ficaram faltando ao teste.

which following is true about Node.js clustering? 1- A single instance of Node.js runs in a single thread. 2-To take advantage of multi-core systems, it is available to launch a cluster of Node.js processes to handle the load. 3-The cluster module allows easy creation of child processes that all share server ports. 4-All of the above ------------------------- let racer = function() { setTimeout(() => console.log("timeout"), setImmediate(() => console.log ("immediate")) ; process.nextTick(() => console.log("nextTick")) console.log( "current event loop") } racer(); Choose the best option 1- timeout, immediate, nextTick, current event loop 2- immediate, timeout, nextTick, current event loop 3- timeout, immediate, current event loop, current event loop 4- current event loop, nextTick, timeout, immediate 5- Syntax Error ---------------------- What styling method is not used in React? 1- by className 2- by inline styles 3- style bindings 4- css-in-Is 5- 3rd party libraries for styling components such as StyledComponents, Radium, (ssModules, etc.
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Full Stack JavaScript Developer

Interviewed at Soshace

4.5
Dec 17, 2021

which following is true about Node.js clustering? 1- A single instance of Node.js runs in a single thread. 2-To take advantage of multi-core systems, it is available to launch a cluster of Node.js processes to handle the load. 3-The cluster module allows easy creation of child processes that all share server ports. 4-All of the above ------------------------- let racer = function() { setTimeout(() => console.log("timeout"), setImmediate(() => console.log ("immediate")) ; process.nextTick(() => console.log("nextTick")) console.log( "current event loop") } racer(); Choose the best option 1- timeout, immediate, nextTick, current event loop 2- immediate, timeout, nextTick, current event loop 3- timeout, immediate, current event loop, current event loop 4- current event loop, nextTick, timeout, immediate 5- Syntax Error ---------------------- What styling method is not used in React? 1- by className 2- by inline styles 3- style bindings 4- css-in-Is 5- 3rd party libraries for styling components such as StyledComponents, Radium, (ssModules, etc.

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