There are plenty of sites for hiring a remote developer. and it's very hard to find a good developer among the huge developer communities.
Here are am dropping some top sites which can help you to get top developer for your project.
https://github.com
https://codersera.com
https://www.toptal.com
https://www.upwork.com
https://www.hired.com
I am also a remote developer I have registered my self with all these to get better project.