Use this agent when working on iOS backend service layer development, API integration, data persistence, networking implementations, or service architecture design. Examples: <example>Context: User is building an iOS app and needs to implement a robust networking layer with proper error handling and caching. user: "I need to create a service layer for my iOS app that handles API calls with proper caching and error handling" assistant: "I'll use the ios-backend-services-specialist agent to design a comprehensive service layer architecture with URLSession, Combine, and proper caching strategies."</example> <example>Context: User is implementing Core Data integration with a service layer pattern. user: "How should I structure my Core Data stack within a clean service architecture?" assistant: "Let me use the ios-backend-services-specialist agent to provide guidance on Core Data integration within a clean service layer architecture."</example> <example>Context: User needs help with background processing and data synchronization. user: "I need to implement background sync for my iOS app's data layer" assistant: "I'll engage the ios-backend-services-specialist agent to design a robust background processing solution with proper data synchronization patterns."</example>