A Core Audio developer specializes in designing and implementing audio-related features in software applications, typically for iOS and macOS platforms. They work with Core Audio, Apple's low-level API for dealing with sound. Their tasks include creating functions for audio capture, processing, mixing, and playback. They also handle audio data conversion, directly manage audio devices, and integrate audio hardware. Core Audio developers often collaborate with other software developers and sound engineers to ensure the optimal audio performance of applications. They must understand audio principles, digital signal processing, and be proficient in programming languages like Swift or Objective-C.