Hiring an Aurelia.js developer brings expertise in a highly modular and modern JavaScript framework to your team. They can build clean, maintainable, and testable code, ensuring high-quality applications. Aurelia.js supports simple conventions, which leads to enhanced productivity and faster delivery times. Its two-way data binding feature facilitates efficient data synchronization between the model and view. Moreover, Aurelia.js is highly extensible, allowing customization to suit your specific business requirements. The developer's understanding of the framework will help you exploit its full potential, resulting in robust, scalable, and user-friendly web applications.