There are a number of reasons to hire a Marionette-js developer. Marionette-js is a relatively new framework, and as such, there is still a lot of unexplored territory in terms of its potential uses. A good Marionette-js developer will have a deep understanding of the framework and be able to use it to its full potential in order to create innovative and effective applications. Another reason to hire a Marionette-js developer is that they can help you take advantage of the benefits that this framework has to offer. For example, Marionette-js is designed with modularity in mind, which means that developers can easily reuse code and components across different projects. This can save you time and money in the long run as you won't need to keep reinventing the wheel every time you start a new project. Finally, hiring a Marionette-js developer gives you access to someone who is constantly keeping up with the latest advancements in the framework so that you can be sure your application is always using the most up-to-date techniques available.