Full-Stack Software Engineer, OS Performance Tools

Confirmed live in the last 24 hours

Apple

San Diego

On-site

Posted January 20, 2026

Job Description

Summary

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.

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