Sr Developer Interview Questions

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what is currying in the javascript Currying is a technique used to transform a function with multiple arguments into a sequence of nested functions, each taking a single argument. The curried function returns a new function for each argument until all arguments are provided, and then it finally returns the result. This technique allows for partial application of a function, meaning you can pass some arguments now and the rest later.
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Senior Javascript Developer

Interviewed at Synechron

4.1
Mar 8, 2024

what is currying in the javascript Currying is a technique used to transform a function with multiple arguments into a sequence of nested functions, each taking a single argument. The curried function returns a new function for each argument until all arguments are provided, and then it finally returns the result. This technique allows for partial application of a function, meaning you can pass some arguments now and the rest later.

Company for some reason makes a strong accent on concurrency initially. I was asked to create a load balancer with the production like code. You won't be given any requirements initially but only to implement the register method. Tried to clarify all the requirements ( target groups, healthchecks etc. ) From the interviwer answers I realized I shouldn't clarify requiments at this point. More requirements will be added added like capacity limitation and uniqueness check. why do you prefer register(String url) over register(URL url)? in what case the array list append won't be constant time? why it's not ready for prod ( concurrency ) what problems do you see? what's the simplest was to fix it? Didn't receive any feedback so it's hard to tell what was expected.
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Senior Java Developer

Interviewed at Revolut

4
May 26, 2025

Company for some reason makes a strong accent on concurrency initially. I was asked to create a load balancer with the production like code. You won't be given any requirements initially but only to implement the register method. Tried to clarify all the requirements ( target groups, healthchecks etc. ) From the interviwer answers I realized I shouldn't clarify requiments at this point. More requirements will be added added like capacity limitation and uniqueness check. why do you prefer register(String url) over register(URL url)? in what case the array list append won't be constant time? why it's not ready for prod ( concurrency ) what problems do you see? what's the simplest was to fix it? Didn't receive any feedback so it's hard to tell what was expected.

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