Have you had a look on Google for startup + jobs + equity?

There are sites like https://angel.co/ who call themselves "the world’s largest startup community."

You can find interesting startups that are looking for cofounders and team members who will pay with a combination of salary and equity.

You wouldn't get profits but you would get a (small) share of the business.

Obviously, there's a risk calculation to be done with startups and how much money you may be prepared to lose in lost earnings if things don't go well.