Look up Mercor, DataAnnotation.tech, and Outlier. You create a profile, upload a resume, and do some required tasks for each job posting they have. It may involve a combination of interviewing with an AI, doing a few trial tasks, and submitting a portfolio or Github profile.
Gotta love how DataAnnotation has been blanketing Reddit with ads for "remote coding jobs," clearly trading on the ambiguity of "coding."
About 75% of the job postings I see on Indeed and LinkedIn are for one of these places