Apple
UI Rendering GPU Software Engineer Intern
Core Animation, UI Rendering, GPU Profiling, iOS & macOS · May – Aug 2026 · Cupertino, CA
- 4× faster internal development workflow, merged into main
GPU and UI rendering in production, on Core Animation, Apple's UI rendering framework.
- Designed and shipped internal developer tooling for Core Animation, taking it from proposal through design, implementation, on-device validation, and multi-round code review with senior engineers toward integration into a shared release branch.
- Built cross-platform CLI tooling and wrote internal architecture documentation of the subsystems involved, verified against source, so other engineers can use the workflow after the internship. The tool speeds up an internal development workflow by 4× and is merged into the main branch.
- Screened, triaged, and fixed system UI rendering bugs reported throughout the iOS and macOS 27.0 betas, working with other Apple teams to minimize regressions before each public release.