some sites you can actually view job postings and sometimes figure out what company it is without ever paying a fee. (climb2350, findapilot) thats the only two i can think off of my head.
You could always try uspilot.com, its free. you can't post a resume, and its pretty ghetto.
Unless you have a type rating in a 737 and a license to kill gophers they probably won't have anything helpful.