Are you struggling to find good developer talent? Have you tried GitHub? GitHub is one of the best networks of actual developers and their respective code bases in the world.
I am partially biased as I use GitHub to store all of my coding work and have made many great connections to some amazing talent.
I would start simple with a good title that you are sourcing for. Let us, for example, choose Java Developer. Let's go to GitHub @ https://github.com/search/advanced and in the Advanced Search box type Java Developer. Then scroll down to User Options and type in your city in the From This Location box.
Take some time and manipulate the title a bit in addition to the location and you will be surprised at what you may find! Happy hunting!