For your search strategy, here are a few resources you can tap into - Turing.com, LinkedIn, Facebook, Twitter, Instagram, Snapchat, Google+, GitHub, Quora, Glassdoor, Hackathons, Meetups, and developer events.
Meetups, IRC chat rooms, Hackathons, and dev conferences are all places where you might find the developers you're looking for. Put your company's message out there, along with the fact that you're looking for developers in these circles and the problem you're attempting to solve.