I've written OS in JS and a cloud based audio player for reading MP3/OGG files directly from Dropbox/Google Drive. Also I've done a PHP tool for synchronizing databases through a repository. Check my portfolio for details.
He really surprise me. I tried different sites for my project and no responses for days. He did it in a couple of hrs, after my post. His service was SUPER. I highly recommend him to anyone. He's very knowledgeable, knows what's his doing and his responses are quick. Excellent job. Keep the good job you're doing. Good luck to you in everything you're doing. Hope to work with you in the future.