It'll depend on your personal factors, but the median salary at FAANGs is nuts at $220-250k. Let's say you are an average FAANG person in Washington state and are paid a bit less than the median with 200K as your starting point. That's probably going to be in the 150K take home range. Save 70% of that at $105K your first year, and it only speeds up from there since the salaries reach 300k-400K in just a few years. This is just the raw salary, and if you take into account all the FAANG perks, generous healthcare package, stocks, social capital, connections, even the free food, etc. it just snowballs like crazy unless your priorities revolve around conspicuous consumption.

Based on the 4% rule, you can then determine how much you need to retire, sell your house (because you'll have a mortgage instead of rent at those salaries) bounce to a lower COL area and then enjoy the rest of your life. You don't even need to stop working if you don't want to, but can downshift to part time and earn much more than the median full-time salary. If you are a SWE you'll have offers, many of them remote.