is the final result going to be some sort of product or service that you would be "selling" to people? if so then go to services board and post what skills you are looking for and hire developers to develop what you want. find an escrow and put their payments with that escrow until they finish the job and the escrow releases their payment.

otherwise, either post the idea here and see if anyone is interested in joining the open source and free development of a new method or start developing it yourself by opening a github repository and post about it on the internet (this forum and reddit would be a good start) then if the idea was really interesting you will slowly get contributors.