Hiring a Google App Engine Datastore developer can be a game-changer for your business. They can leverage this highly scalable NoSQL database for web and mobile applications, ensuring fast and reliable data storage and retrieval. Their expertise can help design efficient data models and queries, improving your app's performance. They can also utilize Google's powerful infrastructure to handle huge data with ease, reducing infrastructure costs. Moreover, they can ensure data consistency, security, and integrity. Their skills can help you build robust, scalable, and efficient applications, providing an enhanced user experience.