Lemon dot io will find you a perfect candidate in just forty eight hours. It's a market place of engineers from europe, and they test and interview every developer to eliminate the risk of a project going wrong. Lemon i o is the perfect solution if you have a technical co-founder on your team that needs specific technology but don't have it yet. They'll match you with a candidate within forty eight hours - and if it doesn't work out, they'll replace them right away.