Just look for part time positions. You can also try to make your own by applying for full time jobs and then springing the part time thing on them at the salary negotiation phase. Yeah, some will balk, but make a cogent argument about how working less hours means your performance per hour should be higher. Which is easily supported by current research. Provide citations if you want. It's sufficiently hard to find good developers, that if you're good enough you can get jobs like this.

I've been working part time, fully remote last year and it was wonderful. I don't think I'd go back to full time work.

After achieving enough trust with the company, I negotiated working alternating weeks. Having a 9 day weekend every 5 work days is incredible. Yeah, I didn't make much money, but I spend that time on my startup, so maybe it will pay off one day. Either way it is a lot more fun!