I found my last job through Angellist (http://angel.co) Give it a try. Also, depending upon your technology, there might be niche job boards. For example, for laravel jobs there's http://larajobs.com
Just search for new startups in your area on google. Send them an email directly saying you want to help them and love what they do. It's that simple...
Twitter might be a good option, either engage with people working in the company or with the community manager.
I really don't. Every job I've ever actually taken has come through my network somehow.