The Software Development Engineer in Test (SDET) will join Apple's CoreOS organization, specifically the Darwin Ecosystem Quality Engineering team. This role focuses on ensuring the quality of features and projects across various system components, including userspace runtimes and concurrency libraries. The ideal candidate will work closely with development teams to define test strategies, develop automation, and deliver quality signals for complex systems. A strong technical background and excellent communication skills are essential for success in this position.

• Solid understanding of the fundamentals of operating systems and UNIX.
• 3+ years of experience with programming languages such as C and Python.
• Experience developing automated tests and test infrastructure.
• Skilled in testing methodologies, test planning, and defining validation strategies.
• Excellent collaborative skills with outstanding verbal and written communication abilities.
• 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.

• Partner closely with development teams to define test strategy.
• Develop robust automation and execute validation plans.
• Investigate and triage test failures and diagnose issues across userspace and kernel boundaries.
• Extend shared test frameworks and build automation for reliable feedback.
• Influence quality decisions across teams and raise the overall bar for validation.

• Employees at Apple are often offered comprehensive benefits that support physical and mental well-being—flexible medical plans, confidential counseling, onsite wellness centers at major campuses, and resources for fitness and daily life. Families typically receive fertility support, paid parental leave with gradual return, caregiving leave, and dependent-care guidance, while financial perks commonly include stock grants (with purchase discounts), 401(k) matching, and income-protection coverage. Employees also see robust time off, Apple University learning and tuition reimbursement, donation matching and paid volunteer hours, and deep product and partner discounts.