Are there any jobs / fields where I can experience that again? I do have deadlines where I work now, but I can basically jump out of them by just saying "no, we can't do this in 3 days" or something around that.
I'd gladly take that low-stress, high-pay job off your hands if you don't want it.
Something like Rocket Internet and their portfolio is a good place to start, or someone in the Alibaba ecosystem if you're not opposed to working with China.
Also the larger ones often pass an intelligence filter, so they're unlikely to push you to unreasonable deadlines and stress levels. But it's still competitive enough and you'll likely find yourself in a team with 10x-ers.
Or are you interested in something more immediate and further removed from software?
Maybe step into the ring as a prizefighter, put on a few pounds so you can go above your weight class for good measure.
Or perhaps roller derby?
I apologize if my level of insanity is not adequate for what you have in mind, but this might get you started.