A Cocoapods developer works with Cocoapods, a dependency manager for Swift and Objective-C Cocoa projects. They use it to integrate libraries into their projects, ensuring seamless functionality and code efficiency. They specify dependencies in a Podfile and Cocoapods pulls them into the project. This developer also maintains and updates these dependencies, resolving conflicts and ensuring compatibility. They can create their own pods for distribution, fostering code reuse and modularity. Understanding the Cocoapods ecosystem, they follow best practices to manage libraries, improve code quality, and streamline development process. They play a crucial role in iOS development, facilitating robust and maintainable apps.