Senior Backend Engineer Interview Questions

2,039 senior backend engineer interview questions shared by candidates

1. How many words are there in string 2. Array with positive and negative numbers. Return subarray with biggest sum 3. Print all numbers - 1000 digits of 0s to 1000 digits of 9s 4. Array that implements get, set, setAll in O(1) 5. Design of one of the features that I developed
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Senior Backend Engineer

Interviewed at HCLTech

3.5
Sep 5, 2023

1. How many words are there in string 2. Array with positive and negative numbers. Return subarray with biggest sum 3. Print all numbers - 1000 digits of 0s to 1000 digits of 9s 4. Array that implements get, set, setAll in O(1) 5. Design of one of the features that I developed

1) The take home assignment was to call their API remotely, get an XML file, and load it into their 'model' object. Then you have to parse through the nodes and build a directed graph in Java. I used JGraphT for that tool. Then you have to find the shortest path from one node to another. 2) The 'hackathon' was to download their Camunda 7 server, access a local Restful API, and then use Java Streams to parse the results, and look for for data. Then once you did that, there were 4 more iterations of where they might want stuff, and this would mostly use Lambda in Java, which I also lacked.
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Senior Backend Software Engineer

Interviewed at Camunda

3.5
Oct 25, 2023

1) The take home assignment was to call their API remotely, get an XML file, and load it into their 'model' object. Then you have to parse through the nodes and build a directed graph in Java. I used JGraphT for that tool. Then you have to find the shortest path from one node to another. 2) The 'hackathon' was to download their Camunda 7 server, access a local Restful API, and then use Java Streams to parse the results, and look for for data. Then once you did that, there were 4 more iterations of where they might want stuff, and this would mostly use Lambda in Java, which I also lacked.

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