Became a committer in 2009. Kelly started his work building performance tools and their associated infrastructure in the web renderer. The results of that work can be seen in Chrome's Developer Tools and in several Chrome extensions. Later, he established and led a team at Google to push WebKit's SVG implementation forward.
Led a small team with the goal of bringing a new set of low-level primitives to the web platform. He was involved in the very early stages of the “dart platform” and worked on a variety of projects to support its initial public launch. The most visible of which was try.dartlang.org which made it possible to try the language and libraries in a browser.
Found ways around the strict compartmentalization of a large organization. Kelly designed a number of user interfaces within Google and continued to do independent design work. Pictured below is a poster for John Maeda's farewell talk at the MIT Media Lab.
Dreamed up, designed and led the development of Speed Tracer, an open-source performance tool that guides developers in building responsive web UIs. It was initially conceived as a cross browser tool and both the Chrome & IE7 versions were used heavily within Google. The Chrome version released publicly in 2010 and, despite being unmaintained, still has about 130k 7-day actives.
Represented Google publicly through a number of speaking opportunities. He covered topics from usability and web app performance to specific uses of Google Web Toolkit. Viewers have suggested that he sounds like the lead singer for They Might Be Giants. Judge for yourself as some of his talks are available online:
Google Web Toolkit
Worked on pretty much every part of the product at some point. Kelly was a very early member of the GWT team and served as Tech Lead on more than one occassion. His contributions include the first debugger (“Hosted Mode”) for Mac, the plugin-based degugger (”Dev Mode”), and the low-level Elemental library to name a few. He “embedded” with a number of major projects at Google using GWT, including AdWords and Wave. In 2010, he won an OC Award (the second highest award for innovation at Google) for his performance work with AdWords.