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Come join us if you're interested in making Apple's products run as quickly and smoothly as possible while learning about a large variety of software components.\nDescription\nMake a difference to iOS, macOS and watchOS by collaborating with software teams all over Apple. This position will require engaging with other engineering teams to gain a deep understanding of problem domains when developing features and helping them solve those problems with performance in mind. We evangelize best practices, help teams measure and understand their performance as well as optimize their existing software. 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