The best path in I can see is basically practicing interviews and landing an on site interview with Uber or Lyft on interviewing.io (where you can get a real interview just by passing enough practice interviews), then reaching out to recruiters at FAANGs and saying that you have interviews with X Y and Z lined up already. That tends to get replies, since you’re signaling that you’re vetted already and recruiters are paid per hire.
It's nice working on any well known product really. I spent 3 years with a tiny startup doing enterprise software, and I can hardly even explain it to other employers, because hell, not even my own boss knew what he was trying to sell. We just had some kind of survey builder platform with a mess of features that was starting to stick with people.
Finding my 2nd job is just as hard as getting the first one, as the product I helped develop is just not that interesting. It would be so much easier to just say I worked at Google, Airbnb, Apple, whatever. I'd be upset, but I don't want to work for a FAANG regardless.