Qualys Software Engineer interview experience

In the first technical round, I was asked about C++ concepts with emphasis on data structures and algorithms, and the conversation also touched Windows services. The second round was more hands-on problem solving: I was given three coding tasks—matrix diagonal elements, a vector index-sum style logic problem, and a multithreading even/odd printing challenge that involved Windows functions.

The last stage combined technical and managerial discussion. That round dug into my previous projects, moved into system design conversations, and included scenario-based questions to understand how I