Hiring a Closure developer can bring several advantages to your project. Closure, a dynamic, general-purpose programming language, provides a powerful toolset for developing robust, efficient, and scalable applications.

One of the primary advantages of hiring a Closure developer is the ability to leverage functional programming paradigms. This can result in cleaner, more concise code that is easier to test, debug, and maintain.

Closure also has excellent support for concurrent programming, which is crucial in today’s multi-core, multi-threaded computing environments. A Closure developer can create applications that execute tasks concurrently, improving performance and responsiveness.

Moreover, Closure's interoperability with Java allows developers to leverage the vast ecosystem of Java libraries and frameworks. This can significantly speed up the development process and reduce costs.

Closure's focus on immutability and state management can also lead to applications that are less prone to bugs and easier to reason about. This can reduce the time spent on debugging and maintenance, leading to cost savings in the long run.

Finally, due to the relatively small size of the Closure community, Closure developers often have a deep understanding of the language's nuances, resulting in high-quality, efficient code.

In summary, hiring a Closure developer can lead to cleaner, more efficient code, better performance, and cost savings.