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Technical Staff Interview Questions

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Design an elevator system and suggest what patterns would be used and why?

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Draw on whiteboard a box presenting a system, a few inputs and a few outputs. Possible two ways of implementing the box: one is to multithread per input, one is to multithread by functions/modules, and run fixed # of threads per function/module and process inputs in a pipeline fashion. Compare the pros and cons of these two implementations.

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I don't remember exactly, but some standard low-level C/C++/Java questions. Maybe something about string manipulation, bit play, recursive algorithms, threads, networking, etc.

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can you work without resources

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Write the solution to the single writer, multiple reader problem

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Presentation of VZ EPC

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How do you deal with requests for more work when you are swamped?

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What was a difficult situation you had to solve?

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Given a string, write code to rotate the the string in-place. That means without any extra buffer. Come up with three different ways of doing so.

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I really felt that all of the questions were straightforward, mostly about specifics of my research. One guy asked me about a specific algorithm I had tested and discarded in my research, and since I had ruled that algorithm out, I kind of forgot how it worked.

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