iOS/macOS Software Engineers build and maintain native applications using Swift, SwiftUI, and UIKit/AppKit. They collaborate with design and product teams to deliver polished, intuitive user experiences, optimise for performance, battery efficiency, and memory usage on Apple Silicon, and participate in code reviews and Apple's internal quality and craftsmanship standards.

Essential skills include Swift, SwiftUI, and UIKit/AppKit development, performance optimisation on Apple Silicon, and adherence to code-review and craftsmanship standards.

Backend and Cloud Services Engineers design and build scalable services powering iCloud, App Store, and iMessage infrastructure. They work with distributed systems, caching layers, and high-availability architectures, and implement APIs and services with strict privacy-by-design constraints.

Essential skills include distributed systems and high-availability architecture, privacy-by-design API implementation, and proficiency in Go, Java, Python, or C++ depending on the team.

ML/AI Engineers develop and train models powering Siri, Camera, Health, and Apple Intelligence features. They work with TensorFlow, PyTorch, and Apple's Core ML framework, focus on on-device inference, efficiency, and privacy-preserving ML techniques, and collaborate closely with data engineering and product teams.

Essential skills include TensorFlow, PyTorch, and Core ML, on-device inference and efficiency, and privacy-preserving machine-learning techniques.

Software QA Engineers design test plans and automation suites for hardware-software integration. They perform regression, performance, and device-compatibility testing across the Apple ecosystem, identify, document, and track defects through resolution using internal tooling, and work closely with engineering to uphold Apple's quality bar before release.

Essential skills include test plan and automation suite design, regression, performance, and compatibility testing, and defect tracking across the Apple ecosystem.

Firmware and Systems Engineers develop low-level firmware for Apple Silicon-based devices. They work on driver development, kernel-level debugging, and hardware bring-up, and collaborate with hardware teams on chip-software co-design.

Essential skills include strong C/C++ and embedded systems fundamentals, driver development and kernel-level debugging, and hardware-software co-design.