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Frontend Software Engineer Interview Questions

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869 frontend software engineer interview questions shared by candidates

For the take home test, they give you a design spec and some mock APIs and ask you to implement a dashboard with certain constraints. They asked a few more general technical questions about JavaScript concepts like promises, async/await, etc. The rest of the interviews consisted mostly of "tell me about a time when..." and "how would you handle this situation" types of questions.
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Software Engineer, Frontend

Interviewed at Syndio

2.3★
Nov 1, 2022

For the take home test, they give you a design spec and some mock APIs and ask you to implement a dashboard with certain constraints. They asked a few more general technical questions about JavaScript concepts like promises, async/await, etc. The rest of the interviews consisted mostly of "tell me about a time when..." and "how would you handle this situation" types of questions.

They asked thoughtful questions around frontend performance optimization, component architecture, and how to design scalable systems. One question focused on improving rendering performance in a React app with a large data set, which led to a great discussion on memoization, virtualization, and design trade offs.
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Frontend Software Engineer

Interviewed at StockX

3.3★
Jun 3, 2025

They asked thoughtful questions around frontend performance optimization, component architecture, and how to design scalable systems. One question focused on improving rendering performance in a React app with a large data set, which led to a great discussion on memoization, virtualization, and design trade offs.

1. Given a set of wireless routers that are interconnected, write an algorithm that finds the longest distance between these routers 2. Was supposed to be a system design interview, but this was the interviewer who arrived late and had no idea what he was supposed to interview for. 3. Design algorithm to instruct a robot how to go through a maze 4. Implement an auto-complete // trie implementation 5. Behavioral questions
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Senior Software Engineer (FrontEnd)

Interviewed at Google

4.4★
May 7, 2022

1. Given a set of wireless routers that are interconnected, write an algorithm that finds the longest distance between these routers 2. Was supposed to be a system design interview, but this was the interviewer who arrived late and had no idea what he was supposed to interview for. 3. Design algorithm to instruct a robot how to go through a maze 4. Implement an auto-complete // trie implementation 5. Behavioral questions

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