Upwork

Upwork is the largest freelancing marketplace in the world, connecting businesses with independent professionals across development, design, writing, marketing, and consulting. It was formed in 2015 through the merger of Elance and oDesk, and is headquartered in Santa Clara, California. It handles billions of dollars in annual freelancer earnings.

Posting a job and browsing talent is free for clients. Upwork earns through service fees on freelancer earnings and optional client plans, with Enterprise contracts sold separately. For affiliates, the money follows the client side rather than freelancer signups.

The affiliate program pays 70% of a new client's first contract spend, capped at $150 per transaction. That cap matters: a client who hires a $5,000 developer still earns you $150, so volume of new clients beats size of contract. Registrations, first job posts, and transactions from existing customers are all excluded — the client must actually hire.

The cookie window is 30 days, which is tight given that hiring decisions often take weeks. Affiliates can withdraw on a set day each month or once the balance clears a threshold, with payment by direct transfer, BACS, or PayPal in your chosen currency.