In average the response you'll receive on free lance marketplaces will always be disappointing, but if the project is not too complicate, you can always find someone good enough to do it.
One option is to invite coders to bid on your project by looking at their past experiences and find some that may relate to the type of project you have.
Other than that, and I know I've said this before, the best coders on free lance sites are those that ask questions relevant to your project description.
While you can safely discard all those that submit generic bids with links to their portfolios without any type of comment about the project they are bidding on, those that ask questions are the ones you want to work with.
One option is to invite coders to bid on your project by looking at their past experiences and find some that may relate to the type of project you have.
Other than that, and I know I've said this before, the best coders on free lance sites are those that ask questions relevant to your project description.
While you can safely discard all those that submit generic bids with links to their portfolios without any type of comment about the project they are bidding on, those that ask questions are the ones you want to work with.