Hiring a Less.js developer can significantly streamline your web development process. Less.js, a CSS pre-processor, extends the functionality of CSS, making it more maintainable, themeable, and extendable. A Less.js developer can write cleaner code with reusable elements, reducing the time and effort in coding. They can also utilize the nested syntax, variables, mixins, and functions offered by Less.js to create more dynamic and efficient stylesheets. This can lead to faster load times, improved user experience, and ultimately, a more successful website or application. You'll gain the benefits of a more organized, flexible, and efficient development process.