Full-Stack Software Engineer, OS Performance Tools **San Diego, California, United States** **Software and Services** **Summary** Posted: **Oct 03, 2025** Weekly Hours: **40** Role Number: **200624367-3543** Join Apple's OS Performance Tools team and directly impact the performance of products used by billions worldwide. We're looking for a full-stack engineer interested in working on cutting-edge performance analysis tools and services that span from embedded systems to applications to server-side data processing. Your work will enable iOS, macOS, tvOS, watchOS, and visionOS to deliver exceptional performance, while providing developers with the tools and data they need to easily write high-performing applications. This is a unique opportunity to work at the intersection of operating systems, large-scale data analytics, and developer tooling at one of the world's most innovative technology companies. **Description** Work on performance tools and services that model various aspects of Apple’s operating systems to enable teams to tackle challenging multi-functional performance problems. You will be creating groundbreaking web services for analyzing and solving problems in the areas of usability/UX, cross-platform compatibility, and techniques for debugging performance issues across the OS. **Responsibilities** + Architect full-stack web applications that process and visualize performance data across Apple's entire ecosystem + Design backend services and APIs that handle data from hundreds of millions of devices + Build front-end interfaces that transform complex performance metrics into actionable insights for engineering teams + Collaborate with engineers to solve critical performance issues + Prototype innovative performance monitoring and debugging tools using emerging technologies **Minimum Qualifications** + 2+ years of experience building performant full-stack web applications using HTML, CSS, and JavaScript + Experience proposing and prototyping new services and solutions + Knowledgeable with SQL and NoSQL database technologies + Excellent spoken and written communication + Passion for product quality and exploring the latest technologies available **Preferred Qualifications** + Experience with ES6, Node.js, and Angular + Tool, automation, and scripting development + Experience in diagnosing and improving performance at multiple layers of the stack + Understanding of operating system fundamentals + Prior development in Unix, Linux, macOS, or iOS + Large data processing & visualization **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 $120,300 and $210,100, 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. (https://www.apple.com/careers/us/benefits.html) 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 (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12ScreenRdr.pdf) . 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 (https://www.eeoc.gov/sites/default/files/2023-06/22-088\_EEOC\_KnowYourRights6.12ScreenRdr.pdf) . Apple will not discriminate or retaliate against applicants who inquire about, disclose, or discuss their compensation. Apple participates in the E-Verify program in certain locations as required by law.Learn more about the E-Verify program (https://www.apple.com/jobs/pdf/EverifyPosterEnglish.pdf) . Apple is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities. Reasonable Accommodation and Drug Free Workplace policy Learn more . Apple is a drug-free workplace. Reasonable Accommodation and Drug Free Workplace policy Learn more . Apple will consider for employment all qualified applicants with criminal histories in a manner consistent with applicable law. If you’re applying for a position in San Francisco, review the San Francisco Fair Chance Ordinance guidelines applicable in your area. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.