We use Clojure (in production, or almost) at Red Pineapple Media in Berlin, mostly for basic web dev stuff (compojure, http-kit, org.clojure/java.jdbc, cassafor

We use Clojure (in production, or almost) at Red Pineapple Media in Berlin, mostly for basic web dev stuff (compojure, http-kit, org.clojure/java.jdbc, cassaforte) and data analysis (Apache Spark, using flambo (https://github.com/yieldbot/flambo https://github.com/yieldbot/flambo). We're building new services with it, but we also rewrite performance-critical parts of our backend from PHP to Clojure.