Senior Frontend Engineer Interview Questions

1,539 senior frontend engineer interview questions shared by candidates

- General web technology questions (what happens when you enter a URL into a browser) - Basic React (state management, effects, React children behavior when parent state changes) - Intermediate - advanced React concepts (useCallback, refs) - Redux as it's used a lot at Docusign
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Senior Frontend Engineer

Interviewed at Docusign

3.6
Oct 24, 2023

- General web technology questions (what happens when you enter a URL into a browser) - Basic React (state management, effects, React children behavior when parent state changes) - Intermediate - advanced React concepts (useCallback, refs) - Redux as it's used a lot at Docusign

Initial questions about basic JS variables, then Promises and execution context. 2nd round questions involved in fetching data from endpoints, handling promises, extracting data from nested objects and recursive functions.
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Senior Frontend Engineer

Interviewed at Canva

3.9
Nov 23, 2021

Initial questions about basic JS variables, then Promises and execution context. 2nd round questions involved in fetching data from endpoints, handling promises, extracting data from nested objects and recursive functions.

1. Hackerrank: 5 UI/FE related questions, two easy/average algo problems in JS (nothing like binary trees, etc. but a real-life problem), plenty of time to do this. 2. Code Review - I was tasked to conduct React/TS code review on a PR consisting of 4 files. The focus was not only on the functionality but on performance, accessibility, maintainability, and readability too. 3. Questions - UI/FE related questions inside Miro. You are presented with a wireframe and asked how would you code it (without actually coding it - you are just discussing). Other questions were focused on FE security, accessibility, etc. Be aware, that they are going to ask you more and more questions about a specific topic (going deep) until you are not able to answer - it's not bad to say "Yeah this I don't know anymore." 4. Behavioral Interview - classic behavioral questions like conflicts with colleagues, co-op styles, your failures, achievements, etc. They are going to send you a link to the STAR method before, so check that out - they expect you to answer according to this format here.
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Senior Software Engineer - UI/Frontend

Interviewed at Mollie

4.6
Aug 25, 2022

1. Hackerrank: 5 UI/FE related questions, two easy/average algo problems in JS (nothing like binary trees, etc. but a real-life problem), plenty of time to do this. 2. Code Review - I was tasked to conduct React/TS code review on a PR consisting of 4 files. The focus was not only on the functionality but on performance, accessibility, maintainability, and readability too. 3. Questions - UI/FE related questions inside Miro. You are presented with a wireframe and asked how would you code it (without actually coding it - you are just discussing). Other questions were focused on FE security, accessibility, etc. Be aware, that they are going to ask you more and more questions about a specific topic (going deep) until you are not able to answer - it's not bad to say "Yeah this I don't know anymore." 4. Behavioral Interview - classic behavioral questions like conflicts with colleagues, co-op styles, your failures, achievements, etc. They are going to send you a link to the STAR method before, so check that out - they expect you to answer according to this format here.

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