Can you modify your solution to allow querying by time without using a database?
Senior Backend Engineer Interview Questions
2,041 senior backend engineer interview questions shared by candidates
System design of QR code digital wallet to retrive info, digital wallet transfer money, topup to digital wallet via 3rd banking API, retrieve wallet transaction history.
- what is database index & its implementation - what is database transaction & how do you implement it
Make an API wrapper for them in Golang.
What do you do in your free time?
Questions explained in detail above
- asked about a recent project, some superficial questions related to it - asked how would I find bottlenecks in apps - asked what happens when a user presses Enter in a browser after entering url - as the additional question was how does browser render the server response - implemented a very basic algorithm task in the online editor, but didn't ask about Big O or anything like that, just that it works and it is ok.
LinkedList, find the endpoint
Design an Online multiplayer chess game
Know your java / spring / relational db fundamentals
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