Apple
Software Engineer - Systems Performance, CoreOS
$142K–$263K
San Diego, California · Full-time · Posted Oct 14, 2026
- Education
- CS degree or equivalent experience.
About the job
Analyzes and resolves app performance issues across Apple operating systems, builds performance tools, and works with engineering teams and app developers to improve platform support.
What you'll do
- Analyze app performance issues and work with systems teams to resolve them.
- Build tools to characterize performance issues on Apple platforms.
- Influence cross-functional Software Engineering teams to develop features that better support apps.
What they ask for
- Expertise in at least one software development layer: embedded, UI, or server.
- Apply data science rigor to software development decisions; independently learn technologies, prototype, and propose designs and solutions.
- Prior development in Unix, Linux, or macOS.
- Excellent communication, problem-solving, and critical thinking; attention to detail and ability to work independently.
Nice to have
- App development experience on iOS, macOS, watchOS, tvOS, or visionOS; understanding of Operating System fundamentals.
- Strong expertise with Objective-C or Swift; practical knowledge of Apple SDK technologies such as SwiftUI, Swift Data, or Swift Concurrency.
Pay
$142,300 and $263,300 (base salary range)
Tools
iOS, macOS, tvOS, watchOS, visionOS, Unix, Linux, Objective-C
Model-written summary · the original posting is authoritative