I’m not a programmer (just some HTML/CSS and Wordpress-specific stuff). However, I’m considering hiring someone (i.e. Elance, Upwork, etc.) to build applications using Asana’s API. I’m pretty impressed with what @danielguajardok has done with Instagantt.
So my question is…when looking for developers, what would be the main skills or programming languages I should be looking for in a developer? Any other tips for finding a quality freelancer developer?