I find it amusing that every time I bring these numbers up, I get people telling me I'm wrong. I'm not making these up. There are people I know making those salaries. There have been countless people here who have talked about how they make that much. This isn't a secret.
Living on $35k and making $135k doesn't mean you'll bank $100k/yr. Taxes cut into it. Living on $150k and making $350k does. And if you're smart you can live on $80k/yr in the bay area. I even know people living on $35k/yr out here.
Not everyone gets the high paying Google job. Not everyone wants it. But it exists and it pays extremely well.
You also neglect stock purchase plans and RSUs, which are the majority of many engineers' compensation. You could make $160k per year at Apple or Google and get $200k of stock every year as well.
There are many cities in the US where you could comfortably live on $35k and get paid $135k as an engineer.