Other than trying to find people on this forum you might want to try to find via reddit, ethereum forums, angel.co , crypto.jobs , cryptocurrencyjobs.co, cryptojobslist.com , blockchaindevjobs.com etc.

I don't think that it will take you long to find developers but it could be hard to find good ones that are not taken since this is fresh field in terms that there is a shortage of good developers around. Wish you luck with your future project!