1. HTTP vs HTTPS 2. Design twitter table. Consider two tables, tweets and users. Suggest a way to associate user_id with tweet_id. 3. Symmetric vs Asymmetric ciphers 4. Suggest how to implement Whatsapp's end to end encryption.
Backend Software Engineer Interview Questions
2,350 backend software engineer interview questions shared by candidates
1st round - was more hands on coding (nothing too complicated) 2nd round - was more theoretical about implementing a feature E2E (client, server, db). In my opinion this was the hardest interview. I feel that in the others I did quite well and they were not too difficult. 3rd round - was system design like interview. Very theoretical with scalability and consistency in mind. 4rd round - was hr interview, pretty straight forward.
Very generic qna questions like what happens when type a website url in your browser, questions on OOPs and SOLID which they expect to remember off the top of your mind without the recruiter specifying anything.
They asked you to complete a coding assessment and an AI assessment
given integer n, return the nth fibonacci sequence element
inverted index with a twist code ratelimiting design API for a text translation service
Questins about past experience and prjects worked on.
Some of the questions that I can recall: Technical Round 1: 1. Array and Hash map: Find the 1st duplicate element in an array. 2. Nested SQL queries (Group by, Order by are used). 3. Questions about Rebel Foods(just to test our interest in their organization). Technical Round 2: 1. A normal riddle question (Easy). 2. The coding question involves mixed concepts of data instruction and algorithms. The question I got required concepts of trees, graphs, linked lists.
1.Write a code whether given number is prime or not? 2. Solve a question using recursion and then dicussed how can the recursion solution can be converted to dp solution.
1. Move zeros to the end of the array in place
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