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Software Development Engineer in Test - CoreOS Quality Engineer

Apple· CoreOS Quality Engineering
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Cupertino, CAFull-timePosted 2mo ago

About the role

SDET role within Apple’s Darwin Ecosystem Quality Engineering team, focusing on testing and automation for low-level system software across userspace runtime, libraries, IPC, process lifecycle, diagnostics, and app installation services within the Darwin ecosystem.

Responsibilities

  • Develop a deep understanding of ongoing development efforts across the Darwin Ecosystem teams
  • Partner 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 installation
  • Design and implement integration, system, and end-to-end test coverage, with targeted unit testing where appropriate, using languages such as C and Python
  • Build, maintain, and extend automated test harnesses and validation infrastructure which includes shared frameworks to enable scalable, high-signal testing across the development lifecycle
  • Investigate, triage, and root cause complex test failures spanning userspace, kernel, hardware, and infrastructure layers, driving issues to resolution
  • Analyze quality data and trends to identify systemic risks, gaps in coverage, and opportunities for increased confidence in release readiness
  • Communicate quality status, key risks, and strategic focus areas to engineering leadership and stakeholders through clear, data-driven reporting
  • Operate effectively in ambiguous environments, independently prioritizing work and influencing quality outcomes across a large, multi-team organization

Qualifications

  • Solid understanding of the fundamentals of operating systems and UNIX, with excellent analytical, problem-solving, and debugging skills
  • 3+ years of experience with programming languages such as C and Python, and experience developing automated tests and test infrastructure
  • Skilled in testing methodologies, test planning, and defining validation strategies, with the ability to independently manage QA efforts across cross-functional teams
  • Excellent collaborative skills with outstanding verbal and written communication abilities, including communicating quality status to stakeholders
  • Bachelor's or Master's 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

Skills

Required:C programmingPythonTest automationDebuggingOS fundamentalsCommunication

Benefits

  • Comprehensive medical and dental coverage
  • retirement benefits
  • range of discounted products and free services
  • reimbursement for certain educational expenses
  • discretionary bonuses or commission payments and relocation eligibility
  • employee stock programs including discretionary RSUs and Employee Stock Purchase Plan
Last updated Aug 21, 2026. Interested? Apply on the company site.

About Apple

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

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