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Senior Frontend Developer Interview Questions

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1,608 senior frontend developer interview questions shared by candidates

I rather prefer to say that they have a more human approach, not a simply a complex algorithm assignment and if you fail you're out. they really want to know you, your personal and professional achievements, the story behind who you are and how can you help the company to grow even more!
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Senior Frontend Developer

Interviewed at Personio

3.3★
Jul 5, 2023

I rather prefer to say that they have a more human approach, not a simply a complex algorithm assignment and if you fail you're out. they really want to know you, your personal and professional achievements, the story behind who you are and how can you help the company to grow even more!

Question 1 - Asked about largescale virtualization lists, with random height and width, and to develop a 2 user chat system in same tab. Interview 2 - Create your own useSelector type hook. You are given a store.js file, where you have get, set, delete functions. You have to develop a hook through which we pass the key and get the value of that key from store, also if we delete the key, all the components, using useSelector for that key should be triggered. Question3: How do you tell a user on web, that a new version of application is avaialble, reload page.
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Senior Frontend Developer

Interviewed at Suki AI

4.1★
Dec 12, 2025

Question 1 - Asked about largescale virtualization lists, with random height and width, and to develop a 2 user chat system in same tab. Interview 2 - Create your own useSelector type hook. You are given a store.js file, where you have get, set, delete functions. You have to develop a hook through which we pass the key and get the value of that key from store, also if we delete the key, all the components, using useSelector for that key should be triggered. Question3: How do you tell a user on web, that a new version of application is avaialble, reload page.

StackBlitz Live Coding - Angular (19+): A list of products is being rendered in the DOM after an HTTP request is sent to an endpoint and returns an array. Q1: Which DOM States are you familiar with? Q2: How would you refactor the code for both the DOM and the component, in such a way it will align with the new Angular reactive features (Signals etc.)?
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Senior Frontend Developer

Interviewed at Palo Alto Networks

3.7★
Jul 6, 2025

StackBlitz Live Coding - Angular (19+): A list of products is being rendered in the DOM after an HTTP request is sent to an endpoint and returns an array. Q1: Which DOM States are you familiar with? Q2: How would you refactor the code for both the DOM and the component, in such a way it will align with the new Angular reactive features (Signals etc.)?

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