So someone starting at BigCo in California should expect to take home 100-125k a year for the first few years. That said, I would caution new entrants to the workforce about three things:
- Tax rates are likely to go up, and certainly will not be going down. It would not be shocking if you were taking home 10% less in a few years solely because of higher taxes. You can also expect your cost of living to grow much more quickly than the tax bracket boundaries will rise.
- Your RSUs are likely to be worth less than you're expecting, because market prices will decline in a bust (a major bust is all but certain at some point in your upcoming 4-year vesting period).
- In a bust, you will likely get a smaller bonus or none at all (even if the company is still making money), and are unlikely to get a raise, even a nominal cost of living adjustment. These conditions can last for several years, so even if you keep your job (hardly a given), your total compensation will likely be much less than you expected when you were hired. A few companies may be doing well enough that you will be exempt, but don't count on it.
All of these things need to be factored in when evaluating compensation. It's not as simple as adding X + Y + Z and assuming that all changes over the next 5 years will be either neutral or positive. That's not how life is.