[fishtoaster]

I would say that, regardless of the company, you should seriously consider quitting your first job after a couple years.

Even if your first job is great, you just have no basis for comparison. If your next job is great too, then swell - now you can work there confidently! If it sucks, you try again. The knowledge you gain by trying a few places is better than sitting in one place, even if that place is actually really good.

For me, my first job was ok. My second job was ok, but in different ways: some things it did way better then job #1, some things way worse. By the end of my second job, I have at least the start of an idea of what I liked and disliked, and used that to inform my third job search.

Really the third job search is where it's really at: you have a lot more options (as a mid or senior engineer) and you have two data points about what you want and don't want in a job. This allows you to optimize around what the best job for you is. My third job lasted my about 5 years until an acquisition because I had dialed in what I liked by that point. If I'd stayed at my first job, I'd never have found that.