Hiring a JavaScript (Object Oriented) developer is beneficial for creating interactive, responsive web applications. They can leverage JavaScript's capabilities to design user-friendly interfaces, improve site speed, and streamline functionality. Their understanding of Object Oriented Programming (OOP) enables them to write clean, reusable, and easy-to-maintain code. This can significantly reduce development time and costs. Moreover, a JavaScript developer's skills are adaptable to numerous frameworks and libraries, offering flexibility in web development. Their expertise is crucial in today's digital landscape where user experience and efficient coding practices are paramount.