Your responsibilities will include:* Designing and developing APIs, frameworks, daemons, and internal protocols to power geolocation and navigation experiences* Building scalable, memory- and CPU-efficient systems that run across iOS, macOS, watchOS, tvOS, and more* Working in Objective-C and Swift in a performance-sensitive, embedded environment* Writing production-level code with deep attention to threading, memory management, and concurrency* Collaborating with cross-functional teams across Apple to expose internal functionality through secure and stable system APIs* Debugging at all levels of the OS stack and integrating with performance and test automation infrastructureThis is a systems-level role — not a UI or web development position. You’ll be contributing to the underlying frameworks and services that internal and third-party apps rely on.