I use a few Google products and their UX strikes me as weak. Documentation for developer tools that I need to use is often painful as well. That's not training,

I use a few Google products and their UX strikes me as weak. Documentation for developer tools that I need to use is often painful as well. That's not training, but if you're not good at explaining your design and code to another coder it doesn't bode well for explaining higher-level principles. If the hiring decision were up to me, I'd discount it.