WeightWatchers Backend Developer Interview Questions

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Backend Developer Interview

Oct 30, 2021

Anonymous interview candidate

No offer

Negative experience

Difficult interview

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I applied in-person. I interviewed at WeightWatchers

Interview

Completely random Java questions followed by live coding a Java stream. When I say completely random I mean completely random. No questions about relevant or recent experience. AWS, REST, payment processing, authentication, agile, databases….no questions whatsoever. Just random Java questions.

Interview questions [4]

Question 1

Describe the differences between Comparable and Comparator.

Answer question

Question 2

What are the thread pool types for ExecutorService? What are the differences? Why would you use them?

Answer question

Question 3

When adding threads to an ExecutorService how do you check them?

Answer question

Question 4

If you have to write to a database and queue if there is an error how do you roll them back?

1 Answer

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Backend Developer Interview