Only worth it if these founders are the smartest people you've ever met, and you think you'll learn a lot more with them than with your current team

Leaving FAANG is a reversible door, so you can always go back, but don't quit just because the founders are recruiting you. They need to win you over big-time

Also make sure you're paid right. Here's a database of startup salary & equity: topstartups.io/startup-salary-equity-database/