Unfortunately right now I do need product focused engineers, but in this case you wouldn't want to work for me anyways :-)
This is also a great thought exercise, what jobs would be good for you? Thinking on it a bit, I think the following could work:
1. Scrum team member at an all remote company on one of their lesser products. If you work fast then you can probably do it in a few hours each day.
2. Maybe a small consultancy where you work on a contractual basis just completing tickets?
3. Government. A small city council style place where you specify you need remote work and then probably the workload is minimal? I don't like the idea of being a burden on a government when there are perfectly dysfunctional companies you can find this with, it feels somewhat undemocratic, but in a pinch this might do?
4. A niche field? Maybe take up COBOL? Then you can specify the hours you work and if the patches are minimal you can fly through them?
Ultimately the thing that might get you to this arrangement fastest is being really good at your job, so you can fly though the work. So perhaps doubling down on one field and becoming a domain expert is the path to this arrangement?
These are all speculations, and hopefully they help you on your path to your desired role. Good luck!