A ClojureScript developer designs and implements software applications using ClojureScript, a compiler for Clojure that targets JavaScript. They utilize its functional programming paradigm to build robust, high-performance web applications or mobile apps. They write, test, and debug code, ensuring seamless functionality across various browsers and platforms. They often work in teams, integrating the ClojureScript applications with other systems and services, and continuously optimize the codebase for maintainability and scalability. Additionally, they may also be involved in UI/UX design, creating engaging and user-friendly interfaces with the aid of ClojureScript's interactive development capabilities.