You could seek out a company that would accommodate such a setup, although that might be tricky to find. If you were a big name in your field, it'd give some we

You could seek out a company that would accommodate such a setup, although that might be tricky to find. If you were a big name in your field, it'd give some weight to your application, but if not, why would the company hire you over someone else willing to work the regular work week? The main reason why a company would not want such a setup, regardless of your productivity, is because other employees would still be working on the weekday(s) you have off. What happens if a coworker really needs you to merge their code in but you're off that day? etc. You probably already know this, but the simplest way to get where you want to be is your own boss, whether the means freelance/contracting or building a company whose goal is not to scale and become the next Facebook, but rather to give you a comfortable life.