Software Development Engineer in Test CoreOS Quality Engineer

Are you a big-picture problem solver who loves setting high-reaching goals Do you have a passion for understanding how each line of code affects all the others In the Core Operating Systems group youll help make the operating system inseparable from the identity of every device it runs on. This group brings hardware software and apps together into one seamless Apple experience and your commitment to cross-disciplinary collaboration will help validate the foundational Darwin runtimes and system services that every Apple operating system from iOS and macOS to watchOS tvOS and visionOS is built upon. Apples CoreOS organization is seeking a highly motivated Software Development Engineer in Test to join the Darwin Ecosystem Quality Engineering team. We recognize that the quality of our software is only as good as that of our testing. The right candidate for this position enjoys finding creative and unexpected ways to torture bits.

We are seeking a Software Development Engineer in Test (SDET) to help drive quality across the Darwin Ecosystem of projects. Our QE team owns the quality of features and projects across the userspace runtime and concurrency libraries (libdispatch/GCD libpthread libplatform libmalloc libSystem) inter-process communication (XPC) process lifecycle and launch (launchd RunningBoard) diagnostics and unified logging (oslog/libtrace sysdiagnose) app installation and runtime services (MobileInstallation MobileContainerManager InstallCoordination) server operating system foundations and the BSD userland that ships across every Apple this role you will partner closely with these development teams to proactively define test strategy develop robust automation execute validation plans and deliver clear trustworthy quality signals for complex low-level systems. You will be responsible for investigating and triaging test failures diagnosing issues that span userspace and kernel boundaries and the test infrastructure itself extending our shared test frameworks and building automation that enables fast reliable feedback throughout the development role requires strong technical depth excellent communication skills and a systems-level mindset. You will work independently on ambiguous problems influence quality decisions across teams and help raise the overall bar for Darwin Ecosystem validation. The ideal candidate is technically curious detail-oriented and motivated to make a measurable impact on the stability and reliability of Apples system software.n

Develop a deep understanding of ongoing development efforts across the Darwin Ecosystem teamsnPartner closely with development teams to understand system architecture feature design and subsystem interactions across the userspace runtime concurrency and IPC libraries process lifecycle diagnostics and app installationnDesign and implement integration system and end-to-end test coverage with targeted unit testing where appropriate using languages such as C and PythonnBuild maintain and extend automated test harnesses and validation infrastructure which includes shared frameworks to enable scalable high-signal testing across the development lifecyclenInvestigate triage and root cause complex test failures spanning userspace kernel hardware and infrastructure layers driving issues to resolutionnAnalyze quality data and trends to identify systemic risks gaps in coverage and opportunities for increased confidence in release readinessnCommunicate quality status key risks and strategic focus areas to engineering leadership and stakeholders through clear data-driven reportingnOperate effectively in ambiguous environments independently prioritizing work and influencing quality outcomes across a large multi-team organization

Solid understanding of the fundamentals of operating systems and UNIX with excellent analytical problem-solving and debugging skillsn3 years of experience with programming languages such as C and Python and experience developing automated tests and test infrastructurenSkilled in testing methodologies test planning and defining validation strategies with the ability to independently manage QA efforts across cross-functional teamsnExcellent collaborative skills with outstanding verbal and written communication abilities including communicating quality status to stakeholdersnBachelors or Masters degree in Computer Science Computer Engineering Electrical Engineering or a related field or equivalent experience

Experience using a debugger (e.g. LLDB) to diagnose low-level failures across userspace/kernel boundaries and familiarity with security testing practices and tools