Lead front end engineer Interview Questions


Lead Front End Engineer interview questions shared by candidates

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Lead Front End Developer was asked...5 January 2020

They asked how I would cope in a role where I was doing less coding.

1 Answers

I said that mentoring people and building them up was more important to me than putting on my headphones and blocking out the rest of the team. Less


A peer submits code EOD that is not up to standard, but you have a demo in the morning, how do you respond?

1 Answers

I would explain that its still a work in progress but also explain what the code is trying to accomplish. Less


Questions were on experience and scenarios, but again, like a conversation and not a back and forth deal. It was like I was part of the team and we were hashing out ideas and a best path forward for various scenarios.

1 Answers

I responded as if I were part of the team. And like a human.


Can you do more than one job?

1 Answers

I sure can, but if I'm being over worked, no.


Asked me to code up a simple application in React using JSFiddle collaboration mode that keeps track of state.

1 Answers

The collaboration mode broke the Babel engine in several ways and affected the application and ability to debug it. My interviewer was a backend coder with no familiarity in React. Overall I think it was a really unprofessional interview. Less


Tell me about the worst and best front-ends you've worked on.

1 Answers

Just have some examples in your pocket of good and bad work product.


Q: Given two arrays of integer values, write a function that merges them and sorts them in numeric order.

1 Answers

I froze up, being caught off guard having my expectations not set correctly. It took me way too long to solve it, IMO. I do not expect to be called in for the next phase. In the interview, I ended up using Array.reduce and the spread operator to merge the arrays into the accumulator. The result of that was sorted with .sort(), passing a fat-arrow function as the parameter that returned a-b. Less


Write a function that returns an array containing the first n values of the fibonacci sequence.


some core concepts in FE.

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