[mindcrime]

for very large number of engineers job opportunity Google/Amzn/MS/FB etc are once in a lifetime type

Meh. Being a developer is being a developer. Not to say that certain specific companies don't sometimes have specific challenges or perks that would be of unique interest to somebody, but by and large, there's no real reason to think if Google/Facebook/Amazon/$anybody_else as a "dream job."

I used to think that way, and after working at two of my "dream job" companies, I've realized that it's pretty never what it's cracked up to be.

Really, the world is SO much bigger than just GoogBookHooSoftCart... I'd encourage people to NOT put those companies on any kind of pedestal.