Having been through interview processes at big tech companies recently, I invested some time in preparing a portfolio to try and improve my chances of success.

Having been through interview processes at big tech companies recently, I invested some time in preparing a portfolio to try and improve my chances of success. What I encountered was that nobody is really interested in your portfolio (or even your resumé really). I appreciate your advice that a portfolio should improve your chances, but nobody from any of the companies looked at it. I'm not sure it's a good investment of time, considering how little importance is attributed to it.