what are mutex locks in os
Backend Software Engineer Interview Questions
9,111 backend software engineer interview questions shared by candidates
Technical Interview - 3 phases: 1. Code review - refactoring a Java class and its methods 2. Algorithmic task - an easy one from Leetcode (it was in neetcode's roadmap) 3. System design - a basic system with DB and API endpoints
Describe how to implement a viedo upload system (like youtube). We want to upload the video in 3 different qualities (360p, 720p,1080p) After the file is uploaded in 3 different qualities, we want to send an email with the metadata to the user (There is a lambda function we need to trigger) - How we trigger it? The system should be scalable.
It was personality test round with HR so just asked personality based questions
Ability to speak in english is an informal conversation with a member from the HR team Take home test is specific the the tech stack you will be working with and is not that hard if you have the right skillset The same goes for the technical interview which is an informal conversation where you are asked on the fly to answer very specific technical questions
Asked about Nest js middlewares
Why did you left your previous jobs and how was your relationship with the manager?
What Java, JVM, .class, bytecode other basic question
what is Collections, HahMap What is hashing? how to avoid collision while hashing. Write a simple hash function
What does single threaded means in NodeJS?
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