There are many reasons why you should consider hiring an Underscore.js developer. Some of these reasons include: - Underscore.js developers have a strong understanding of JavaScript, which is essential for developing web applications. - They are experienced in using various libraries and frameworks, which can be helpful in building complex applications. - They are skilled in working with data, which is another important aspect of web development. - They are familiar with the MVC model and can help you build scalable applications.