CI Systems Engineer - Results & Failure Analysis

Summary
Apple's Software Developer Workflows team delivers fast, reliable CI systems that make Apple's software easier to develop and ship. We believe that streamlined development unlocks creativity, innovation, and potential for developers.
We're looking for a skilled CI Systems Engineer to join our team and help build the systems that enable Apple's OS engineers to understand, diagnose, and resolve build and test failures at scale.
We value diverse perspectives and unique skills. More than specific experience, we seek an engineer passionate about building great software, continuous learning, and solving complex technical problems.
Description
In this role, you'll design and maintain infrastructure for collecting, processing, and analyzing massive volumes of CI results data. Your work will turn complex failure signals into actionable insights that accelerate development.
Success requires flexibility, proactivity, and thriving in a supportive environment with challenging problems. You'll need excellent judgment for timely technical decisions, ability to collaborate effectively on design discussions, and strong technical depth to make informed tradeoffs.
In your role as a CI Systems Engineer, you will:
Responsibilities

Build scalable results storage architectures that efficiently handle Apple's massive CI workload, enabling fast retrieval and analysis of build and test results
Develop failure analysis systems that transform raw CI data into actionable insights, helping developers quickly diagnose root causes and understand test failure patterns
Optimize data structures and database design for fast storage and deduplication of build and test failures
Drive performance improvements and optimization initiatives for results storage and query latency to meet developer needs
Collaborate with OS engineering teams across platforms (iOS, macOS, etc.) to understand diagnostic needs and refine analysis capabilities
Implement observability and alerting for the CI results infrastructure itself, ensuring reliability and detecting systemic failure patterns
Share technical knowledge and best practices with team members on failure analysis, data systems design, and infrastructure challenges
Minimum Qualifications

BS in Computer Science or equivalent professional experience
2+ years of software engineering experience, preferably focused on CI infrastructure, data systems, or failure analysis
Proficiency in languages suited to systems and data work (Swift, Scala, Python, Go, C/C++, etc.)
Proven ability to work independently on complex problems and collaborate effectively on team initiatives
Strong communication skills to collaborate with diverse teams and translate complex failure data into developer-friendly insights
Demonstrated experience in designing or contributing to systems that handle scale, data integrity, and query performance
Preferred Qualifications

Deep expertise in data storage, retrieval, and analysis, including experience with relational and NoSQL databases
Excellent systems thinking for designing solutions that handle reliability and complex failure modes
Experience building data pipelines or working with distributed data processing frameworks
Problem-solving approach to failure analysis with ability to think about root cause analysis, diagnostics, and observability
Attention to detail and quality mindset regarding data integrity, consistency, and correctness
Experience with CI/CD failure analysis, test result aggregation, or build system diagnostics
Familiarity with failure root cause analysis (RCA), anomaly detection, or diagnostic tooling
Background working on large-scale data systems, observability platforms, or analytics infrastructure
Knowledge of iOS or macOS internals, development environments, and testing infrastructure
Familiarity with machine learning techniques applied to failure prediction or pattern detection
Pay & Benefits
At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $147,400 and $272,100, and your base pay will depend on your skills, qualifications, experience, and location.
Apple employees also have the opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple’s Employee Stock Purchase Plan. You’ll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses — including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits.
Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.
Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant.
Apple accepts applications to this posting on an ongoing basis.