It's not really any different than getting on-site contracts, in my experience. You find somebody with hiring authority at the place you want to work, and talk

It's not really any different than getting on-site contracts, in my experience. You find somebody with hiring authority at the place you want to work, and talk to them. Sometimes, companies who don't advertise remote positions are willing to try it. Sometimes, companies who prefer full time salaried employees are willing to bring you on as a contractor. Sometimes they may even be willing to consider a short 3-6 month gig to build out a prototype or project that they'd been meaning to get to but never had a full-time dev to throw at. The only way to find out is to ask. Good developers are hard to find, and good companies know to grab ahold with both hands when they find one. If that developer just happens to want to do his thing remotely, in short bursts, or even from the beach in Costa Rica, that might not be as much of a stumbling block as you think.