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Principal Software Engineer Interview Questions
2,049 principal software engineer interview questions shared by candidates
The 1.5-hour pair programming question was not like your typical LeetCode question. It simulated a type of problem that you would solve at a bank/credit card company. The focus was algorithmic implementation; not so much OOP concepts.
Given a string, check there are exactly 3 question marks b/w the digits and the 2 digits always add up to to 10 else return false.
Typical interview questions, nothing out of ordinary but you need to know what you are talking about.
The tech questions are very generic about software development principles: recursion vs iteration, heap vs stack, DI, TDD, time & space complexity, concurrency and multithreading, ... The home test is an absolute waste of time. Can't give much info but it was simple, it was more about the quality of the tests, handling highly concurrent scenarios and whatnot, but the funny thing is that the feedback they provided was not even about what I submitted. Is like they reviewed someone else's code. Asked for a second review or at least to double check they didn't mix reviews and didn't hear back from them. Very disrespectful and unprofessional.
Knowledge of software languages and proficiency with each.
Design an object-oriented hierarchy for the animal kingdom.
Write the code or pseudo code for a LRU cache.
[Interview Loop - Coding] Implement a Rate Limiter.
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