Hey, I'm the other founder at Circle. So the entire backend is clojure. For the devops stuff, we use pallet [1], a clojure library similar to puppet or chef, a

Hey, I'm the other founder at Circle. So the entire backend is clojure. For the devops stuff, we use pallet [1], a clojure library similar to puppet or chef, and stevedore, a clojure DSL for writing bash. We actually have zero bash in the source tree! The web UI is a fat javascript client using knockout and HAMLcoffee, so the web server only serves a JSON API, all HTML rendering is done client-side. [1] palletops.com