An Apigility developer designs, builds, and manages APIs using the Apigility framework. They create RESTful services with the ability to define all possible HTTP operations, handling HTTP requests and responses, managing error conditions, and validating input. They also ensure security through authentication and authorization. Moreover, they are responsible for maintaining the documentation of APIs for other developers and stakeholders. They work with databases, and they can handle various data types, including XML, JSON, and more. Their work allows seamless communication between different software systems, enabling efficient data exchange and integration.