Realistically Clojure isn’t the best option when it comes to maximizing your chances on the job market except when you already have your mind fixated on a company that already uses Clojure in their tech stack. For pure marketability you’re probably well advised to do your research on which technology is used in your desired work area and make your decision based upon your results. But all things considered the programming language you choose is just a means to an end and if you can convince a potential employer that you have required domain knowledge and you’re willing to learn you probably can’t make a wrong language choice.