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Web Applications Engineer Interview Questions

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554 web applications engineer interview questions shared by candidates

I was expecting some JavaScript questions related to DOM manipulation, instead It was a pure algorithm and data structure question: Revert words in a sentence. For example given "hello world", you need to return "world hello". I was so nervous that at I first I reverted the entire sentence character by character. I was able to correct it in the end but obviously he wasn't very satisfied as it eventually took me a long time to solve this problem.
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Web Applications Developer

Interviewed at Forio

4.1★
Feb 15, 2014

I was expecting some JavaScript questions related to DOM manipulation, instead It was a pure algorithm and data structure question: Revert words in a sentence. For example given "hello world", you need to return "world hello". I was so nervous that at I first I reverted the entire sentence character by character. I was able to correct it in the end but obviously he wasn't very satisfied as it eventually took me a long time to solve this problem.

For our mobile applications (iPad, iPhone and Android) we have to serve up different image advertisements to each different device. Generally our advertisers purchase their space for a month of time, but at times can be for only set periods of times. Sometimes they order for all three devices and other times for only one or two. Finally, each advertisement has a specific URL that the user should go to when they click on the advertisement. We need you to describe how you’d build a small application to serve up these advertisements. You don’t need to write line by line code, but be able to describe the architecture of the system from a high level. Be prepared to describe: ● How would you serve up the mobile advertisements? ● How would the data for each advertisement be stored (i.e., what does the database look like)? ● How would you track how many times the advertisement has been viewed or clicked?
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Web Applications Developer

Interviewed at Thrillist

3★
Mar 3, 2014

For our mobile applications (iPad, iPhone and Android) we have to serve up different image advertisements to each different device. Generally our advertisers purchase their space for a month of time, but at times can be for only set periods of times. Sometimes they order for all three devices and other times for only one or two. Finally, each advertisement has a specific URL that the user should go to when they click on the advertisement. We need you to describe how you’d build a small application to serve up these advertisements. You don’t need to write line by line code, but be able to describe the architecture of the system from a high level. Be prepared to describe: ● How would you serve up the mobile advertisements? ● How would the data for each advertisement be stored (i.e., what does the database look like)? ● How would you track how many times the advertisement has been viewed or clicked?

An existing e-commerce system sells widgets to registered customers. The company has too much excess inventory. It wants to be able to offer discounts on certain products to certain customers, or certain groups of customers. How would you extend the schema below to support such an enhancement to the system? Existing schema has 2 tables : Users and Products
avatar

Web Applications Developer

Interviewed at Thrillist

3★
Mar 3, 2014

An existing e-commerce system sells widgets to registered customers. The company has too much excess inventory. It wants to be able to offer discounts on certain products to certain customers, or certain groups of customers. How would you extend the schema below to support such an enhancement to the system? Existing schema has 2 tables : Users and Products

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