Good point about the testing system. Test coverage plus a good CI/CD system goes a long way to reduce "deployment anxiety", in my experience. Untrustworthy tools or broken processes can be a major source of stress.

But, I wouldn't completely discount startups as an option. There are startups that respect their employees time and offer a great environment for low-stress workers, at least at the 10+ employee level. (I don't have much experience with startups smaller than that). If you value self-determination, a startup can be a great option.