Work on open source. Be active on message boards and other social places online where your target community spends a lot of time (twitter, etc). Write blog po

Work on open source. Be active on message boards and other social places online where your target community spends a lot of time (twitter, etc). Write blog posts about things you've done and share them in those communities. It's not super fast, but it casts a wide net. And then even if people don't know you, they know about you. Eventually a lot of people will be like "hey, it's lj3, who always responds with intelligent and well-thought out answers... oh, and didn't lj3 write that cool proof of concept for x thing?" And then you look for people you've interacted with in the community, see where they work, and talk to those people about whether or not their company is hiring. Always ask, even if their careers page doesn't have anything. You never know when a new headcount may have opened up, and just hasn't made it to the careers page yet. Good luck!