UI Performance and Power - Senior Engineer
Apple
Product, Design
Cupertino, CA, USA
USD 181,100-318,400 / year + Equity
Posted on Jan 6, 2026
Apple's Compositing, Color, and Display Software organization provides the graphics software foundation for all of Apple's innovative products, including iPhone, iPad, Apple TV, Mac and Apple Watch. Our goal is to enable developers and HI designers to create exceptional visual experiences by efficiently utilizing hardware acceleration and color technologies through compositing and display. The technologies we develop are central to enabling enhanced experiences across our platforms, including acceleration for Liquid Glass UI material and presenting HDR content with the highest quality. If you are passionate about delivering smooth animations, exceptional visual quality, and great battery life to millions of users worldwide, we want to hear from you. If you're excited about maximizing the latest capabilities of our Apple SoCs and Graphics APIs to enable stunning visual effects, this role is for you.
Senior Engineer on the UI Performance and Power team responsible for analyzing and optimizing graphics compositing performance across Apple's product lineup. In this role, the candidate will drive performance improvements that directly impact user experience, develop tools for performance analysis, and collaborate with cross-functional teams to deliver a smooth, glitch-free, responsive, and power-efficient UI across all Apple devices.
- Analyze and optimize performance of UI rendering and compositing systems across iPhone, iPad, Apple Watch, Apple TV, and Mac platforms
- Develop tools and automation for performance analysis, profiling, and regression detection
- Debug complex performance issues across multi-layered graphics and compositing systems
- Partner with UI/Media Framework teams, HI designers, and app developers to optimize UI experiences
- Collaborate with Metal graphics framework and OS teams to leverage platform capabilities
- Influence power and performance management policies balancing responsiveness with battery life
- Provide data-driven insights to inform technical decisions and future roadmaps
- 5+ years of experience in software development, including software release and integration processes
- Strong experience with performance analysis, optimization, and profiling techniques
- Hands-on experience with real-time rendering and computer graphics
- Strong foundational understanding of Operating Systems, Computer Architecture, and CPU/GPU programming
- Strong C/C++ programming and systems-level development
- Proven debugging skills for complex, multi-layered systems
- Bachelor's degree in Computer Science or related field, or equivalent experience
- Experience with Metal or modern graphics APIs (DirectX, Vulkan)
- Experience with Mac or iOS application development using Swift or Objective-C
- Knowledge of power management and battery-life analysis techniques
- Experience with memory footprint analysis and optimizations
- Experience developing performance analysis tools and automation frameworks
- Experience with automated performance testing and regression analysis systems
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.