I train and optimize large AI models for a small startup (50 people). I report to CTO (a cofounder), who's a very smart and reasonable guy. I have two group meetings a week, and occasional ad-hoc calls with my teammates. My teammates are great guys with similar backgrounds to mine (phds from top schools, in their late 30s/early 40s). I work remotely since 2010, never worked for a big company, changed a few startups in the last decade. My salary is 250k, but I used to make double that - I downshifted a couple years ago. Currently I'm enjoying 4 hour days on average: sometimes I wake up and don't feel like working at all, sometimes I want to get something done and I work for 8 hours straight, but it's rare. No one cares as long as I deliver good results, and I usually do (I have lots of experience in my field). Over the years I managed to save for a couple of real estate properties, and I got a bit of stocks (hand-picked). I could probably retire tomorrow, but I'm pretty sure I'd miss working. You could say I'm the opposite of being burnt out, perhaps I'm too relaxed, and I should be more ambitious, but I got three kids, so they keep me busy.

Not OP. Just optimize for happiness instead of money. I earn ten times less now than I used to. I work half the time and am twice as happy.

(I work for a small local business in Eastern Europe, ten(ish) people, we don't earn much, but get a lot of freedom and the atmosphere at work is very nice)