I have found Clojure to be fantastic to run a backend service that requires data analysis and processing.
Currently I use Clojure as the backend to power iData[1], a website filled with data visualizations and processing. My biggest project was the survey[2] and its accompnyaing dashboard[3] as the first required a lot of db thinking in Datomic but was swift to excute and the later benefited from Clojure's concurrency and caching!