DSA, Low and high level
Backend Engineer Interview Questions
15,495 backend engineer interview questions shared by candidates
I needed to create queue management api with multiple different queue providers. I needed to have kafka service, sqs service and some local representation of queue management. during init of the app I needed to load correct service according to env variables.
1. Binary tree problems. 2. LinkedList problems. 3. Java OOPs concepts 4. Java Collections behavior 5. SQL Join Queries and complex Aggregate functions 6. String Problems 7. Recursion Algorithm problems. For all the questions, I was asked to write the code on paper. I don't know why they conduct interviews if they never wished to give the offer.
they asked about my experience with a SaaS products and challenging work i have done related to them.
given array of size k, write a function that return true if all numbers between 0..k-1 are inside the array.
Usual DS/Algo types questions from leetcode Eg: longest common substring Some OS-related questions and high-level system architecture design question(eg: design bit.ly)
Codility: Q1: Solving Happy Tree Related Question Q2: Given A, B, C with their own counter, merge all them together without any of them getting AAA, BBB,CCC in a sequence.
implement timeseries data structure - on premise day test
Some typical and not-so-typical ones. Leetcode and Interviewbit should be helpful.
Typical BFS/DFS, LinkedList, BST and Design questions.
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