I am building an interactive voice broadcasting solution as a SaaS at http://dandydialer.com . Back-end API is built on Clojure, Datomic and freeswitch. I am using Clojurescript, Reagent, Reframe and Re-com for the front-end. Deployment and system orchestration is built on LXD and Ansible.

Pardon the website, as there isn't much to see there. We are still in alpha stage. Yes, Clojure ecosystem has been a tremendous help in engineering the system. As a former python dev, I think Clojure made a whole lot of mandatory moving parts unnecessary - like celery and redis for designing such a system. Also, ditching Javascript+react ecosystem with better wrappers has been an absolute blast so far.