Senior Front End Software Engineer Interview Questions

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Senior Front End Software Engineer interview questions shared by candidates

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BitMEX
Senior Software Engineer - Front End was asked...July 26, 2019

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

CafePress

Sheet with some javascript code

1 Answers

OOP JS

Medallia

Use this JSON data we provided to insert it into our React component.

1 Answers

Since the JSON data was already imported, just reference the name of the JSON data, followed by any property inside it. Less

eBay

Was given a parent div and 3 child divs inside. Asked to add CSS to each giving some height and width to the child divs and border of a certain thickness to all. Asked to add another child div inside the second child. Was asked to give absolute position to this div with some bottom and left positioning and asked to draw the layout.

1 Answers

I did draw it correctly because I failed to understand the actual definition of absolute positioning. Less

eBay

Given a sentence, Hello how are you HELLO. Find the minimum distance between two words. Given input: hello, you. Output: 1. The input words are case insensitive.

1 Answers

My implementation: var words = sentence.split(' '); var wordLoc1 = find(words, input1); var wordLoc2 = find(words, input2); var differences = []; var min; for (var i = 0; i < wordLoc1.length; i++) { for (var j = 0; j < wordLoc2.length; j++) { differences.push(abs(wordLoc1[i] - wordLoc2[i])); } } min = minimum(differences); Did not implement min properly. Did not optimize for space of differences properly. Could not eliminate the need for two for loops. Less

Twin Health

Merge K sorted array list.

1 Answers

I was able to solve it using minHeap priority queue with runtime : O(n*mlog(n * m)) and space : O(n*m) Expected time complexity was : O(N Log k) Less

Salesforce

write a Java program to print the 1st 25 Fibonacci numbers

1 Answers

The interviewer tells you that the first two Fibonacci numbers are 0 and 1, and each subsequent number is the sum of the previous two. Its not meant to be difficult. Less

2. Code the UI of the particular page using bootstrap.

1 Answers

I did my best using bootstarp, HTML and CSS

3. Color Palate using HTML , JS , jQuery

1 Answers

I did with dynamic design using HTML Table, CSS and JS

Medallia

How do Promises work? How would you use this custom Promise we created to make a "fetch" call?

1 Answers

myPromise.then((resolve, reject) => {}, catch((error) => {}, finally(() =>{});

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