Enter a job title or keyword
Sr. WebKit Performance Engineer
Job Location:
Job Location:
San Diego, CA - USA
Monthly Salary:
Not provided by the employer
Monthly Salary:
Posted:
11 July 2026 (30+ days ago)
Posted:
Application Deadline:
8 October 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
The WebKit Performance team is looking for an engineer with a passion for software optimization to support one of the most heavily used frameworks and applications in the is the system framework for rendering web content on Apple platforms. When you load a webpage in Safari thats WebKit! WebKit is also an Open Source software project in which Apple engineers collaborate with engineers from around the world to improve the framework evolve web APIs and ensure the best possible experience on the web. WebKit is a foundational component of iOS macOS watchOS tvOS and visionOS forming the basis of many key improvements in WebKit make all of our products better. The WebKit Performance team is responsible for defending and improving the launch speed processing speed memory size and power consumption of the WebKit framework. You will help improve WebKit performance on all Apple platforms.
As a WebKit Performance Engineer you will seek opportunities to improve WebKit performance as measured by execution time memory consumption and power use. You will also be responsible for diagnosing performance issues identified in benchmarks and in web applications helping us identify and correct recent performance regressions and helping to train and mentor others in performance improvement techniques.
Investigating cases of poor performance in WebKit-based applications Identifying performance bottlenecks and hot-spots in the WebKit framework. nCreating and defending performance benchmarks covering important web technologies. nWorking across teams at Apple to drive improvements in core with developers on the Open Source WebKit project.
BS in Computer Science or equivalent work in with software performance measurement analysis and understanding of data structures and with pointers memory management threads and processes.
At least 4 years of prior hands-on iOS or macOS application with Objective-C Swift and Cocoa with web technologies (HTML CSS JavaScript SVG WebGL WebGPU).nExperience with UIKit and debugging analysis communication and critical thinking skills.
As a WebKit Performance Engineer you will seek opportunities to improve WebKit performance as measured by execution time memory consumption and power use. You will also be responsible for diagnosing performance issues identified in benchmarks and in web applications helping us identify and correct recent performance regressions and helping to train and mentor others in performance improvement techniques.
Investigating cases of poor performance in WebKit-based applications Identifying performance bottlenecks and hot-spots in the WebKit framework. nCreating and defending performance benchmarks covering important web technologies. nWorking across teams at Apple to drive improvements in core with developers on the Open Source WebKit project.
BS in Computer Science or equivalent work in with software performance measurement analysis and understanding of data structures and with pointers memory management threads and processes.
At least 4 years of prior hands-on iOS or macOS application with Objective-C Swift and Cocoa with web technologies (HTML CSS JavaScript SVG WebGL WebGPU).nExperience with UIKit and debugging analysis communication and critical thinking skills.
Required Experience:
Senior IC
About Company
Ask Siri to name the most successful company in the world and it might respond: Apple. And it's not just out of familial pride. Apple consistently ranks highly in profit, revenue, market capitalization, and consumer cachet. In 2018, the company became the first reach a trillion dollar ... View more
