CareerPlanSign in

Sr. WebKit Performance Engineer

San Diego, United States of America💼 Full-time🗓 2026-07-09 → 2026-09-28

Core

Optimizing the launch speed, processing speed, memory size, and power consumption of the WebKit framework across Apple platforms.

Role type

Senior IC performance engineer (system framework)

Builds

Optimized rendering engine for iOS, macOS, watchOS, tvOS, and visionOS

Domain

Operating Systems / Web Technologies

Required skills

C++, software performance measurement, data structures and algorithms, memory management, threading, process management

Preferred skills

iOS/macOS application development, Objective-C, Swift, Cocoa APIs, web technologies (HTML, CSS, JavaScript, SVG, WebGL, WebGPU), UIKit, AppKit

Technologies

WebKit, Safari, iOS, macOS, watchOS, tvOS, visionOS, C++, Objective-C, Swift, HTML, CSS, JavaScript, SVG, WebGL, WebGPU, UIKit, AppKit

Responsibilities

Investigating poor performance in WebKit-based applications, identifying performance bottlenecks and hot-spots, creating and defending performance benchmarks, working across teams to drive core framework improvements, interacting with Open Source WebKit developers

Seniority

Senior, hands-on IC

Sourced via apple · Listed on CareerPlan, which tracks 855,000+ jobs from 20+ sources.