OS Performance Engineer – CoreOS Kernel Engineering

The CoreDarwin team within Apple's CoreOS organization is seeking an exceptional OS performance engineer to optimize performance on Apple Silicon platforms across iOS, macOS, visionOS and beyond. This role focuses on low-level programming and performance optimization at the intersection of software and hardware.

As part of the Kernel Engineering team, you'll work on core operating system layers, analyzing and enhancing OS performance for responsiveness and efficiency. You'll drive innovative kernel design improvements for scheduling, memory, and power efficiency while collaborating closely with hardware architects and chip design teams to optimize for Apple Silicon platforms.

The role involves engaging with multiple teams - from hardware engineering to compiler, application and frameworks teams - to deliver world-class end-to-end system performance. You'll have the opportunity to influence next-generation CPU, GPU and memory subsystems while working with cutting-edge technology.

The ideal candidate should have strong C programming skills, deep OS fundamentals knowledge, and experience with kernel development and low-level performance analysis. Familiarity with modern CPU/memory architectures and profiling tools is highly valued. This position offers competitive compensation including base pay, stock options, comprehensive benefits, and the chance to impact user experience across Apple's entire product line.

Join Apple's CoreOS team to push the boundaries of performance optimization and help shape the future of Apple's operating systems and hardware platforms. Your work will directly influence millions of users' experiences across Apple's ecosystem.