Senior front end developer Interview Questions

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Senior Front End Developer interview questions shared by candidates

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Accenture
Senior Front End Developer was asked...14 July 2017

What are your greatest technical strengths?

8 Answers

Management

Social media experience

I am technically sound in using R script for R programming language, base SAS, SAS analytics and Advanced SAS. Less

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SoFi

Lots of questions. First question was how to find the heaviest ball out of 9 ball problem.

3 Answers

Divide the balls into 3 groups. Weight two of them. Then you know the heaviest group. Then do the same, but with the single balls in the heavy group to find the heavy ball. Less

What if you have 10-1-1, 5-5-5, and 4-5-6? The heaviest ball is not in the heaviest group. Less

Assuming 8 balls are uniform and 1 is heavier: Divide the 9 balls into 2 groups of 4 balls and compare the 4-ball groups If they are even, the 9th ball is the heaviest. Otherwise, it's a binary search, for a total of 3 weighings Less

100x

Settimeout, flatten an array

2 Answers

Hi, can you tell me the San francisco office address for Bitmex? I'm trying to correspond with them. Less

My Interviews were online - Did not go for an onsite interview

Kindred Group

How to maintain versioning in webpack bundles files?

2 Answers

1) Webpack 4 provides option for adding '[chunkHash]' in output path. Although there are various other versioning configuration in webpack depending upon the need. 2) Adding 'hash:true' if using 'htmlWebpackPlugin'. Less

IS the take home test language specific ? Is it API based

Fiverr Inc.

Create chat application on already configured framework

2 Answers

You can clone repo localy but they suggest to do it in web editor. React codebase is using react hooks. Code of api you can find here pastebin. com/6Tvx0aQj You can listen to window.Chat. onMessage to display messages, window.Chat.onTyping to handle the status of typing, window.Chat.sendMessage - to send your message. Less

The key in these questions is to cover the fundamentals, and be ready for the back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Fiverr or ex-Fiverr Senior Front End Developer experts on Prepfully? They give real-world practice and guidance, which is pretty helpful. prepfully.com/practice-interviews Less

ClearTax

Event loop, let var const, looping problems

2 Answers

Answered all questions

There's quite an extended back and forth in actual interviews for questions like this, so nothing quite like real practice. The Prepfully ClearTax Senior Front End Developer experts have actually worked in this role, so they're able to do an honest-to-God accurate mock, which really puts you through the paces. prepfully.com/practice-interviews Less

Rapid7

Explain what is happening with a higher order function example. const thing = next => action => next(action) applyMiddleware(thing(someAction))

2 Answers

this wasn't the exact question but if you understand how to explain this then you will be good. I understand it now much better than I did then. Less

It’s the concept of currying functions

Course Hero

Take home project involving creating a component.

2 Answers

what were the questions on phone screen after the take home assignemnt

The key in these questions is to cover the fundamentals, and be ready for the back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Course Hero or ex-Course Hero Senior Front End Developer experts on Prepfully? They give real-world practice and guidance, which is pretty helpful. prepfully.com/practice-interviews Less

Tootle Software

Difference between ID and Class

2 Answers

I explained with definition and real time samples.

The difference between an ID and a CLASS is that an ID can be used to identify one element, whereas a CLASS can be used to identify more than one. Less

Yahoo

Build a git status web app that list out all dependencies, status and vulnerabilities.

2 Answers

There's a lot of elements to typically cover in these questions, clarifications, scoping, making sure you're answering the actual question the interviewer is looking for you to answer, etc. Could be worth doing a mock interview with one of the Prepfully Oath Senior Front End Developer experts... they've worked in the role so they clearly know how to get through the interview. prepfully.com/practice-interviews Less

You could either grab the package json scan through it then use another service to check one by one Or you could just use a library (as Bang Lee suggested although I am not sure which one it is) Less

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