[Twisell]

Yup because I once applied to a big company and to this day I still don't now if a human was actually involved in any part of the process... Given the company and given the job it's quit possible that the HR people just filtered out the result using standardized fields and never gave an eye at the CV & resume I took 5 hour to write.

Months later I learn that they fire half of their HR externals contractors (maybe for the best).

So in the end yes, a simple "I read, not interested" would be great.

And if applicable a variation that could be "not for this job, but maybe try another one" or even "you need more experience" would actually be even more useful.

PS: What I learn though is that for big company hiring process is broken. My best chance of being recruited is to build a great project and communicate about it at my current job (but that's not easy if you are at the bottom of the stack and writing code under copyright...), but now I'm even less tempted to even apply to theses big Co.