Hiring an AngularJS developer comes with several advantages. Firstly, they bring their expertise in the robust AngularJS framework, which is designed for creating dynamic web applications, thus facilitating enhanced user experience. They can build rich, scalable and real-time applications with reduced development time and increased efficiency.

Secondly, AngularJS developers are proficient in creating single-page applications (SPAs), which are known for their speed and seamless navigation. SPAs deliver a desktop-like experience, which can significantly improve user engagement and satisfaction.

Thirdly, AngularJS developers can leverage the framework's component-based architecture. This means they can reuse components across different parts of an application, ensuring consistency, reducing code redundancy and improving the maintainability of the codebase.

Furthermore, AngularJS supports two-way data binding, which reduces the amount of boilerplate code developers have to write. This not only speeds up development but also reduces chances of making errors.

Lastly, AngularJS has a large community of developers, which means that your developer can easily seek help and find resources to solve any challenges they might encounter. This can reduce the time spent on problem-solving and increase productivity.