As a WebKit Performance Engineer, you will seek opportunities to improve WebKit performance in time, memory consumption, and power use. You will also be responsible for diagnosing performance issues, helping us identify and correct recent performance regressions, and helping to train and mentor others in performance improvement techniques. Specific job duties will include:Investigating cases of poor performance in WebKit-based applicationsIdentifying performance bottlenecks and hot-spots in the WebKit engineCreating and defending performance benchmarks covering important web technologiesInteracting with developers on the Open Source WebKit project.