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Principal Software Engineer Interview Questions

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2,067 principal software engineer interview questions shared by candidates

First interview: 1 leetcode like question, 1 throughput load implementation. 2 hours total. Second Interview: More pseudo-code interview, writing a rate limiter system. Emphasize on concurrency and mutual exclusion.
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Principal Software Engineer

Interviewed at Palo Alto Networks

3.7★
Jan 15, 2024

First interview: 1 leetcode like question, 1 throughput load implementation. 2 hours total. Second Interview: More pseudo-code interview, writing a rate limiter system. Emphasize on concurrency and mutual exclusion.

if input is chars = ["a","a","b","b","c","c","c"] output should be output = ["a","2","b","2","c","3"] and if the input is like chars = ["a","b","b","c","c","c"] output should be output = ["a","b","2","c","3"] and if the input is like chars = ["a","b","b","c","c","c","c","c","c","c","c","c","c","c","c"] output should be output = ["a","b","2","c","1","2"]...do not use any data structures
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Principal Software Engineer In Test

Interviewed at Palo Alto Networks

3.7★
Feb 27, 2024

if input is chars = ["a","a","b","b","c","c","c"] output should be output = ["a","2","b","2","c","3"] and if the input is like chars = ["a","b","b","c","c","c"] output should be output = ["a","b","2","c","3"] and if the input is like chars = ["a","b","b","c","c","c","c","c","c","c","c","c","c","c","c"] output should be output = ["a","b","2","c","1","2"]...do not use any data structures

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