what do you want to know? (not L7 though). Mostly the level determines scope: L3 can work on a feature or part of a feature. L4 can own a large feature. L5

what do you want to know? (not L7 though). Mostly the level determines scope: L3 can work on a feature or part of a feature. L4 can own a large feature. L5 owns a project. L6 owns a large project or something that affects multiple projects. L7 is working across multiple teams to improve many teams projects. However, a project at rando big company might be very different than a project at a FAANG, so even these terms are incredibly nebulous. Generally, most FAANGs are very snobby in that even if you pass the interviews, if you don't come from another FAANG type company you get down leveled. I know multiple people this happened to( Interviewed for L7 EM, offer L6 EM. Interviewed for L6 SWE, offer at L5 SWE). Age and experience matter less though. I know L5s who are 29, and L5s who are in their late 50s. So if you interview for L6, unless you nail every part of every interview, expect L5. Same with L7, L4, etc.