Senior Backend Engineer Interview Questions

2,041 senior backend engineer interview questions shared by candidates

Given an array of positive decimal numbers, return the minimum number of sets of a maximum size. For example, if the maximum size was 4.0, group the positive decimals into the smallest number of sets where each set sums to less that or equal to 4.0, and return the number of sets.
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Senior Backend Engineer

Interviewed at DoorDash

3.6
Sep 25, 2023

Given an array of positive decimal numbers, return the minimum number of sets of a maximum size. For example, if the maximum size was 4.0, group the positive decimals into the smallest number of sets where each set sums to less that or equal to 4.0, and return the number of sets.

1. elk stack 2. kafka who is the consumer and who is the producer 3. a store details are not changing and in order to avoid repeated request to database , how java and redis communicate 4. what type of architecture between database and java , jpa vs jdbc , advanatages and use cases difference 5. api gateway? api architecture ? restful vs soap 6. api security spring , 7. how are you authenticating the apis 8. how and where you are storing the logs 9. If someone is doing a man in the middle attach , how will you avoid it .
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Senior Backend Engineer

Interviewed at Decimal Technologies

3.3
Sep 4, 2023

1. elk stack 2. kafka who is the consumer and who is the producer 3. a store details are not changing and in order to avoid repeated request to database , how java and redis communicate 4. what type of architecture between database and java , jpa vs jdbc , advanatages and use cases difference 5. api gateway? api architecture ? restful vs soap 6. api security spring , 7. how are you authenticating the apis 8. how and where you are storing the logs 9. If someone is doing a man in the middle attach , how will you avoid it .

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