[nunez]

Find and message them on LinkedIn. Pay for the messaging plan; it is way more effective than stuffing your message in the connection request. Also, be prepared to talk salary and have a resume on hand.

LinkedIn is their tool of choice these days. StackOverflow Careers is another popular option for them. Facebook Jobs might pick up steam, so I'd experiment with that too.

[user5994461]

and ask people around you what recruiters put them in the company, and how was their experience with it.