If you don't have a linkedin profile you should set one up. Recruiters can vary in terms of quality but they are a useful resource when looking for a job and most of them hang out on linkedin. There's also careers.stackoverflow.com. For more startup oriented jobs there's hired.com and I think interviewing.io. Aline Lerner is one of the people behind interviewing.io and as far as recruiters go she's pretty good so sending her an email can't hurt.