I don't know how many times it needs to be said, but Testing != QA. Testing is just one (albeit very important) part of an overall QA strategy. QA starts right up front in a system's life. There's a pretty good explanation here: https://www.functionize.com/blog/quality-assurance-vs-quality-control-vs-testing-whats-the-difference although rather bizarrely the same site has a set of interview questions for QA people that are almost all about testing.