I've advocated this for a long time, not something people are receptive to though. I've been in GPs position, I've done little or nothing for YEARS at various development jobs, I do some high visiblity things, but otherwise coast. It's bizarre, but i always get glowing reviews. I've spent years averaging 5 hours of work a week. It's easy in software if you're good at it.

The logical conclusion is maximize your earning moonlighting an additional job. It's hard though; to land one, and work two jobs concurrently. IF they're both remote helps a lot.

Pretty sure this is illegal as well, what with non competes and all

Can you deliver pizza's at night? Why can't you do another dev job? Sure there's risk, but the calculus is: $100k a year or $200k a year? Retire in 30 years or 10? I've had lot's of jobs that didn't even make me sign a non compete.

I don't think a pizza delivery job is considered competition against a dev role.

Depends on your state.

In places like CA, you'd probably be fine to offer services to a company that's completely unrelated to your nominal employer, as long as you don't use privileged information from your "main" job.

That being said, have a friendly chat with your own lawyer before doing this.

Only if you actually violate the non compete (and even then it will be state-specific).