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Senior Frontend Engineer Interview Questions

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1,542 senior frontend engineer interview questions shared by candidates

I can’t share the exact questions, but I can say that they were all closely related to Verkada’s business and the kind of challenges you’d face in the day-to-day role. It felt practical and relevant, which I really appreciated.
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Senior Frontend Engineer

Interviewed at Verkada

3.7★
Jul 9, 2025

I can’t share the exact questions, but I can say that they were all closely related to Verkada’s business and the kind of challenges you’d face in the day-to-day role. It felt practical and relevant, which I really appreciated.

I had a pretty easy question, it's probably a LC medium: You get an array of [arrival, departure] for multiple buses Determine how many spaces you'd need in the parking lot on a given day. 1 bus = 1 spot. If a bus leaves at 3, that spot is open for another bus to come in at 3 (or later)
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Sr. Frontend Engineer

Interviewed at TikTok

3.2★
Nov 7, 2024

I had a pretty easy question, it's probably a LC medium: You get an array of [arrival, departure] for multiple buses Determine how many spaces you'd need in the parking lot on a given day. 1 bus = 1 spot. If a bus leaves at 3, that spot is open for another bus to come in at 3 (or later)

Round 2 - Architecture - 1 hour - The Frontend team lead took this round. Problem 1 - He started sharing his screen and told me about their platform and the projects they would pick up next. He showed me their UI to write Scala code for a pipeline and asked me to convert that flow to a No/Low code solution. He was continuously using jargon that someone who has already worked with their products knows - such as gems. I had to explicitly ask him to slow down and explain the flow in detail, but he constantly failed to do so. He was talking like I was a member of the team and knew everything about their product. He failed to explain his thoughts clearly and was constantly lacking communication skills. I created wireframes despite lacking context and did my best to give him a solution. He also accepted the solution. Problem 2 - Then he showed me their search component which had an icon that was trailing the text you write in that input. This icon had a jitter and delay as it was moving along with the text. He asked me how I would build and improve this component. I gave him a solution that removed this jitteriness that it had previously. He was skeptical about the solution although my solution was 100% right, I checked that post the interview as well. Problem 3 - Next up, he asked me how I would add a hashtag autocomplete in the same search input. I gave him the solution and he accepted it. He then started talking about a scrolling issue in the same, but he failed to explain what the problem was. We ended the round here. It felt more like a consultancy call instead of an interview where I was solving their product's problems and planning for new features. Result - Moved to the next round.
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Senior Frontend Engineer

Interviewed at Prophecy

3.6★
Oct 10, 2024

Round 2 - Architecture - 1 hour - The Frontend team lead took this round. Problem 1 - He started sharing his screen and told me about their platform and the projects they would pick up next. He showed me their UI to write Scala code for a pipeline and asked me to convert that flow to a No/Low code solution. He was continuously using jargon that someone who has already worked with their products knows - such as gems. I had to explicitly ask him to slow down and explain the flow in detail, but he constantly failed to do so. He was talking like I was a member of the team and knew everything about their product. He failed to explain his thoughts clearly and was constantly lacking communication skills. I created wireframes despite lacking context and did my best to give him a solution. He also accepted the solution. Problem 2 - Then he showed me their search component which had an icon that was trailing the text you write in that input. This icon had a jitter and delay as it was moving along with the text. He asked me how I would build and improve this component. I gave him a solution that removed this jitteriness that it had previously. He was skeptical about the solution although my solution was 100% right, I checked that post the interview as well. Problem 3 - Next up, he asked me how I would add a hashtag autocomplete in the same search input. I gave him the solution and he accepted it. He then started talking about a scrolling issue in the same, but he failed to explain what the problem was. We ended the round here. It felt more like a consultancy call instead of an interview where I was solving their product's problems and planning for new features. Result - Moved to the next round.

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