Ruby, Python, and PHP are the most popular languages. Front and backend web dev are roughly equally popular, but web dev is much more popular than native mobile (the split is around 80/20). We also get some interest in dev ops (chef is a little more popular than puppet, maybe 60/40).

I emailed you as well. Given that you've mentioned DevOps and I do DevOps freelancing (yes, it's possible!), I thought I'd give it a go.

cheers, --c